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Surgery - Skin cancer (Squamous Cell Carcinoma)
Introduction
Skin cancer involving the epidermal keratinocytes. A squamous cell carcinoma known as Marjolin's ulcer develops in a region of skin that has been injured or irritated for a long time.
Etiology
UV radiation from sunshine exposure, or actinic keratoses (sun-induced precancerous lesions), is the primary aetiological risk factor. The human papilloma virus, radiation, carcinogens (such as tar derivatives, cigarette smoke, soot, industrial oils, and arsenic), long-term immunosuppression (such as that experienced by HIV patients and transplant recipients), and DNA repair genetic defects (such as xeroderma pigmentosum) are some additional causes.
Epidemiology
20% of skin cancers are the second most frequent cutaneous malignancy. This is a common occurrence in middle-aged and older light-skinned people. The incidence is roughly 1 in 4000. Men outnumber women 2-3: 1.
History
Skin lesion, ulcer, bleeding repeatedly, or not healing at all.
Examination
Variable appearance: Often on sun-exposed areas, ulcerated, hyperkeratotic, crusty or scaly, non-healing lesion. Feel for any localized lymphadenopathy.
Pathogenesis
Bowen's disease manifests as solitary or many reddish-brown scaly patches. It is caused by intraepidermal carcinoma in situ, which is defined as intraepidermal proliferation of atypical keratinocytes when the basement membrane is intact. The malignant keratinocytes that cause squamous cell carcinoma enter the skin locally, move to nearby lymph nodes, and then migrate to distant organs like the liver and lungs.
The TNM system forms the basis for staging.
Investigations
Skin biopsy: Determines whether a lesion is cancerous and sets it apart from other skin lesions.
Lymph node biopsy or fine-needle aspiration: Only required if metastases is suspected.
Scanning methods include PET, MRI, and/or CT.
Management
Surgical: Curette, cryotherapy, cauterization, or photodynamic therapy may be adequate to completely remove a lesion in cases of Bowen's illness. When excising invasive squamous cell carcinomas, a suitable margin of 4 or 6 mm should be left (low- or high-risk lesions).
Mohs micrographic surgery involves precise margin excision and a histological evaluation to verify total excision. Can be applied to places like lips and the vicinity of eyes where extensive excisions are challenging.
A sentinal lymph node biopsy may be carried out in situations where there is a chance of metastasis.
When surgery is not feasible or for larger lesions, local radiation may be used (cure rate lower compared to surgery).
Medical: Intralesional interferons if alternative treatments are not feasible, or topical 5-fluorouracil for Bowen's disease. When a disease has spread, chemotherapy is used.
Complications
When squamous cell carcinomas on sun-exposed skin are diagnosed, they are typically localized; however, one-third of those on the lips or lingual membranes have already spread.
Prognosis
good as long as it is handled properly. The following are high-risk factors: (1) location of the tumor (lips, ears, and scar); (2) size of the tumor (>2 cm; lip and ear tumors measure 1.5 cm); (3) deep degree of invasion; (4) poorly differentiated; (5) perineural invasion; and (6) recurrent tumors.
Introduction
Skin cancer involving the epidermal keratinocytes. A squamous cell carcinoma known as Marjolin's ulcer develops in a region of skin that has been injured or irritated for a long time.
Etiology
UV radiation from sunshine exposure, or actinic keratoses (sun-induced precancerous lesions), is the primary aetiological risk factor. The human papilloma virus, radiation, carcinogens (such as tar derivatives, cigarette smoke, soot, industrial oils, and arsenic), long-term immunosuppression (such as that experienced by HIV patients and transplant recipients), and DNA repair genetic defects (such as xeroderma pigmentosum) are some additional causes.
Epidemiology
20% of skin cancers are the second most frequent cutaneous malignancy. This is a common occurrence in middle-aged and older light-skinned people. The incidence is roughly 1 in 4000. Men outnumber women 2-3: 1.
History
Skin lesion, ulcer, bleeding repeatedly, or not healing at all.
Examination
Variable appearance: Often on sun-exposed areas, ulcerated, hyperkeratotic, crusty or scaly, non-healing lesion. Feel for any localized lymphadenopathy.
Pathogenesis
Bowen's disease manifests as solitary or many reddish-brown scaly patches. It is caused by intraepidermal carcinoma in situ, which is defined as intraepidermal proliferation of atypical keratinocytes when the basement membrane is intact. The malignant keratinocytes that cause squamous cell carcinoma enter the skin locally, move to nearby lymph nodes, and then migrate to distant organs like the liver and lungs.
The TNM system forms the basis for staging.
Investigations
Skin biopsy: Determines whether a lesion is cancerous and sets it apart from other skin lesions.
Lymph node biopsy or fine-needle aspiration: Only required if metastases is suspected.
Scanning methods include PET, MRI, and/or CT.
Management
Surgical: Curette, cryotherapy, cauterization, or photodynamic therapy may be adequate to completely remove a lesion in cases of Bowen's illness. When excising invasive squamous cell carcinomas, a suitable margin of 4 or 6 mm should be left (low- or high-risk lesions).
Mohs micrographic surgery involves precise margin excision and a histological evaluation to verify total excision. Can be applied to places like lips and the vicinity of eyes where extensive excisions are challenging.
A sentinal lymph node biopsy may be carried out in situations where there is a chance of metastasis.
When surgery is not feasible or for larger lesions, local radiation may be used (cure rate lower compared to surgery).
Medical: Intralesional interferons if alternative treatments are not feasible, or topical 5-fluorouracil for Bowen's disease. When a disease has spread, chemotherapy is used.
Complications
When squamous cell carcinomas on sun-exposed skin are diagnosed, they are typically localized; however, one-third of those on the lips or lingual membranes have already spread.
Prognosis
good as long as it is handled properly. The following are high-risk factors: (1) location of the tumor (lips, ears, and scar); (2) size of the tumor (>2 cm; lip and ear tumors measure 1.5 cm); (3) deep degree of invasion; (4) poorly differentiated; (5) perineural invasion; and (6) recurrent tumors.
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Surgery - Repair of an Abdominal Aortic Aneurysm (Open)
Introduction
Large asymptomatic aneurysms (diameter greater than 5.5 cm) are elective.
Aneurysms that are growing (>0.5 cm in 1 year).
Aneurysms that leak or burst are emergencies. Manifest aneurysms.
Anatomy
An aberrant focal dilatation of the abdominal aorta is known as an abdominal aortic aneurysm. Ninety-five percent start below the origin of the renal artery and may spread to the iliac arteries.
Usually fusiform in shape, their rate of expansion ranges from 0.2 to 0.8 cm/year, and the diameter determines the risk of rupture. Within the aneurysm, laminated thrombus builds up and may embolise distantly.
Investigations
Ultrasound and CT/MRI scanning are used to evaluate the size and anatomy of aneurysms during elective repairs. Reconstruction from 3D CT enables endovascular planning.
Pre-operative tests include FBC, coagulation, U&Es, crossmatch (six to eight units of blood), echocardiography, CXR, ECG, and cardiopulmonary.
After surgery: Monitor HDU and ITU settings closely. Check for emboli in the lower limbs. DVT prevention.
Actions
Access: To improve epidural pain control, a transverse incision or a full-length midline laparotomy are also options. rarely carried out as laparoscopic surgery with manual assistance.
Exposure: To avoid damaging the left sympathetic chain, the small bowel is moved upward and to the right, exposing the retroperitoneum over the aorta, which is slightly incised to the right. With caution to prevent harm to the left renal vein, which passes in front of the aorta, dissection is performed to expose the aorta from the infrarenal aorta to the bifurcation. It is determined, split, and ligated to identify the inferior mesenteric artery.
The aneurysm's proximal and distal ends are clamped, and systemic heparin is given.
Aneurysm opening: The contents of the aneurysm are visible when the aneurysm is opened longitudinally.
Sutures are used to limit any bleeding from the lumbar arteries in the back wall and to remove any thrombus inside the aneurysm.
Graft insertion: The distal aortic and bifurcation walls are examined. A tube graft is used to treat an aortic aneurysm. An aorto-iliac or, less frequently, an aorto-bifemoral trouser graft is utilized when the illness affects the proximal or distal iliacs. Prolene sutures are used to secure the grafts in position, and air or debris is flushed out afterwards.
Evaluation of the graft: The distal end is progressively opened with close supervision because of the possibility of hypotension and arrhythmias, after the aortic clamp is gradually relaxed to ensure hemostasis. After that, the aneurysm sac is sealed around the graft and sutured using the anastomosis suture line to prevent adhesions.
Closure: Using sutures or clips to close the skin in bulk.
When an aneurysm ruptures unexpectedly, the patient is taken to the operating room while having a systolic blood pressure of 80–100 mmHg. The procedure begins as soon as the patient is quickly draped and readied, with a "crash induction" of anesthesia. The bleeding vessel is to be rapidly clamped down and controlled.
Complications
bleeding, myocardial ischemia, MI or arrhythmias, cerebrovascular accident, respiratory problems (ARDS, infection, and atherosis), ischemia of the colon, ischemia of the spine, atheromatous embolization, renal failure, graft thrombosis, and endoleak. Late: False aneurysm at anastomosis, aorto-enteric fistula, and graft infection.
Prognosis
In most facilities, the rate of death from elective surgery is currently less than 5%. The mortality rate is exceedingly high when an aortic aneurysm ruptures or leaks and needs emergency repair.
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Surgery - Above Knee Amputation
Indications
gangrene, ischemia, or infarction: lower limb ischaemia, whether acute or chronic, brought on by severe burns or trauma.
Cancer: certain tumors, such as osteosarcoma.
Severe infection: necrotizing fasciitis or gas gangrene (Clostridium perfringens).
Unmanageable ulcers or excruciatingly paralyzed limbs are uncommon.
Anatomy
Above Knee Amputation: It is ideal to be 15 cm above the tibial plateau.
Through-knee amputation: In some cases, this is necessary (for example, if the femur has previously undergone orthopaedic stabilization). The drawbacks include erratic skin flap healing and a bulbous stump that requires prosthesis fitting.
A lengthier stump than an AKA is left behind after a femur division at the supracondylar level, providing support for the patient during sitting.
Other procedures (such as amputation of the hindquarter and disarticulation of the hip) are infrequent and are primarily done for severe infections or cancer.
Investigational studies
Pre-operative care should ideally involve a multidisciplinary evaluation by prosthetic, anesthetic, and surgical specialists. evaluation of the degree of amputation in light of the patient's characteristics and the severity of the condition (e.g. rehabilitation chances). If a patient has diabetes, a sliding insulin scale, proper blood tests and cross-matching, and, if necessary, urine catheterization.
Following surgery: Early physiotherapy, prosthesis fitting, or walking aids (such as a pneumatic postamputation mobility device) are used in the rehabilitation process.
Actions
Access: The skin is marked by two identical fish mouth-shaped skin flaps, the upper ends of which are located at the level of the femur transaction. 15 cm above the tibial plateau is this location.
Ligation of muscles and vessels: During skin incision, diathermy is used to split the muscles of the anterior and posterior thigh compartments and ligate the long saphenous vein.
Sutures connect the quadriceps to the hamstrings and the vastus lateralis to the adductors. Nerves are neatly split under mild traction, and arteries and veins are tied off.
A bone amputation involves dividing the femur, removing the periosteum, and polishing the ends of the bone to smooth it out.
Closure: After achieving hemostasis, the skin is sutured together by bringing the two myoplastic flaps together. You might leave a drain in place.
Complications
Early: Bony spurs, psychological issues, stump length that is too long or short, DVT, flap ischaemia, stump hemorrhage, neuroma, or infection; 15% early mortality.
Late: "Phantom" limb pain (lessened by potent analgesics after surgery), neuroma development, skin-borne bone erosion, ischaemia, osteomyelitis, ulceration.
Prognosis
The majority of people who have amputations have concurrent severe atherosclerotic disease, and only 30% of them survive five years after the procedure due to a significant risk of further vascular complications.
Indications
gangrene, ischemia, or infarction: lower limb ischaemia, whether acute or chronic, brought on by severe burns or trauma.
Cancer: certain tumors, such as osteosarcoma.
Severe infection: necrotizing fasciitis or gas gangrene (Clostridium perfringens).
Unmanageable ulcers or excruciatingly paralyzed limbs are uncommon.
Anatomy
Above Knee Amputation: It is ideal to be 15 cm above the tibial plateau.
Through-knee amputation: In some cases, this is necessary (for example, if the femur has previously undergone orthopaedic stabilization). The drawbacks include erratic skin flap healing and a bulbous stump that requires prosthesis fitting.
A lengthier stump than an AKA is left behind after a femur division at the supracondylar level, providing support for the patient during sitting.
Other procedures (such as amputation of the hindquarter and disarticulation of the hip) are infrequent and are primarily done for severe infections or cancer.
Investigational studies
Pre-operative care should ideally involve a multidisciplinary evaluation by prosthetic, anesthetic, and surgical specialists. evaluation of the degree of amputation in light of the patient's characteristics and the severity of the condition (e.g. rehabilitation chances). If a patient has diabetes, a sliding insulin scale, proper blood tests and cross-matching, and, if necessary, urine catheterization.
Following surgery: Early physiotherapy, prosthesis fitting, or walking aids (such as a pneumatic postamputation mobility device) are used in the rehabilitation process.
Actions
Access: The skin is marked by two identical fish mouth-shaped skin flaps, the upper ends of which are located at the level of the femur transaction. 15 cm above the tibial plateau is this location.
Ligation of muscles and vessels: During skin incision, diathermy is used to split the muscles of the anterior and posterior thigh compartments and ligate the long saphenous vein.
Sutures connect the quadriceps to the hamstrings and the vastus lateralis to the adductors. Nerves are neatly split under mild traction, and arteries and veins are tied off.
A bone amputation involves dividing the femur, removing the periosteum, and polishing the ends of the bone to smooth it out.
Closure: After achieving hemostasis, the skin is sutured together by bringing the two myoplastic flaps together. You might leave a drain in place.
Complications
Early: Bony spurs, psychological issues, stump length that is too long or short, DVT, flap ischaemia, stump hemorrhage, neuroma, or infection; 15% early mortality.
Late: "Phantom" limb pain (lessened by potent analgesics after surgery), neuroma development, skin-borne bone erosion, ischaemia, osteomyelitis, ulceration.
Prognosis
The majority of people who have amputations have concurrent severe atherosclerotic disease, and only 30% of them survive five years after the procedure due to a significant risk of further vascular complications.
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Surgery -Below The knee Amputation
Indications
gangrene, ischemia, or infarction: severe trauma, burns, or lower limb ischaemia, either acute or chronic.
Some tumors are malignant (e.g., osteosarcoma and malignant melanoma).
Severe infection: necrotizing fasciitis or gas gangrene (Clostridium perfringens).
Unmanageable ulcers or excruciatingly paralyzed limbs are uncommon.
Anatomy
Below the knee: Robinson's skew flap and Burgess long posterior flap are the two transtibial amputation procedures.
Ankle level: Rarely used since prosthesis attachment is challenging.
Midfoot: Chopart's disarticulation of the talonavicular and calcaneocuboid joints or Lisfranc's involving the disarticulation between the tarsal and metatarsal bones.
Ray: This involves cutting through the metatarsal bone to remove a toe.
Toe: Because cutting through a joint exposes avascular cartilage that is poorly mending, division occurs through the proximal phalanx.
Investigations
Pre-operative care should ideally involve a comprehensive evaluation by professionals in surgery, anesthesia, prosthetics, physiotherapy, psychology, and other fields. Determining the degree of amputation in light of the patient's characteristics and the severity of the condition (e.g. rehabilitation chances). If a patient has diabetes, a sliding insulin scale, suitable blood tests and cross-matching, and, if necessary, urine catheterization.
Following surgery: Early physiotherapy, prosthesis fitting, or walking aids (such as a pneumatic postamputation mobility device) are used in the rehabilitation process.
Procedure
Access: Skin flaps are marked on the skin before the incision, either asymmetrical anteromedial and posterolateral flaps or a lengthier posterior flap (Burgess). Tibial transition occurs 10–12 cm below tibial tuberosity or 14 cm below the knee joint.
Ligation of muscle and vessels: During a skin incision, the anterior and peroneal compartment muscles are separated by diathermy, and the long saphenous vein is ligated. Veins and arteries are tied off, and the tibial nerve is neatly separated under light traction when the concomitant vasa nervorum dilates.
Amputation of the bone: After the periosteum is removed, the fibula is split 2 cm proximally.
In addition, the tibia is separated and stripped, and the ends of the bones are filed smooth.
Closure: A cylindrical stump is formed by the posterior flap covering the severed tibia with a portion of the gastrocnemius muscle. Sutures are used to seal the skin after hemostasis is reached.
You might leave a drain in place.
Complications
Early: Bony spurs, psychological issues, stump length that is too long or short, stump hemorrhage, DVT, flap ischaemia, and pain.
Late: creation of neuromas, erosion of bone through skin, ischaemia, osteomyelitis, ulceration, and "phantom" limb pain (which is lessened by effective analgesia after surgery).
Prognosis
Amputations are most frequently performed on patients who also have significant atherosclerotic disease, and only 30% of these patients survive after five years.
Refer to Fig. 20 for a diagrammatic summary of general amputations.
Indications
gangrene, ischemia, or infarction: severe trauma, burns, or lower limb ischaemia, either acute or chronic.
Some tumors are malignant (e.g., osteosarcoma and malignant melanoma).
Severe infection: necrotizing fasciitis or gas gangrene (Clostridium perfringens).
Unmanageable ulcers or excruciatingly paralyzed limbs are uncommon.
Anatomy
Below the knee: Robinson's skew flap and Burgess long posterior flap are the two transtibial amputation procedures.
Ankle level: Rarely used since prosthesis attachment is challenging.
Midfoot: Chopart's disarticulation of the talonavicular and calcaneocuboid joints or Lisfranc's involving the disarticulation between the tarsal and metatarsal bones.
Ray: This involves cutting through the metatarsal bone to remove a toe.
Toe: Because cutting through a joint exposes avascular cartilage that is poorly mending, division occurs through the proximal phalanx.
Investigations
Pre-operative care should ideally involve a comprehensive evaluation by professionals in surgery, anesthesia, prosthetics, physiotherapy, psychology, and other fields. Determining the degree of amputation in light of the patient's characteristics and the severity of the condition (e.g. rehabilitation chances). If a patient has diabetes, a sliding insulin scale, suitable blood tests and cross-matching, and, if necessary, urine catheterization.
Following surgery: Early physiotherapy, prosthesis fitting, or walking aids (such as a pneumatic postamputation mobility device) are used in the rehabilitation process.
Procedure
Access: Skin flaps are marked on the skin before the incision, either asymmetrical anteromedial and posterolateral flaps or a lengthier posterior flap (Burgess). Tibial transition occurs 10–12 cm below tibial tuberosity or 14 cm below the knee joint.
Ligation of muscle and vessels: During a skin incision, the anterior and peroneal compartment muscles are separated by diathermy, and the long saphenous vein is ligated. Veins and arteries are tied off, and the tibial nerve is neatly separated under light traction when the concomitant vasa nervorum dilates.
Amputation of the bone: After the periosteum is removed, the fibula is split 2 cm proximally.
In addition, the tibia is separated and stripped, and the ends of the bones are filed smooth.
Closure: A cylindrical stump is formed by the posterior flap covering the severed tibia with a portion of the gastrocnemius muscle. Sutures are used to seal the skin after hemostasis is reached.
You might leave a drain in place.
Complications
Early: Bony spurs, psychological issues, stump length that is too long or short, stump hemorrhage, DVT, flap ischaemia, and pain.
Late: creation of neuromas, erosion of bone through skin, ischaemia, osteomyelitis, ulceration, and "phantom" limb pain (which is lessened by effective analgesia after surgery).
Prognosis
Amputations are most frequently performed on patients who also have significant atherosclerotic disease, and only 30% of these patients survive after five years.
Refer to Fig. 20 for a diagrammatic summary of general amputations.
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Surgery - Appendicectomy
An acute case of appendicitis. interval treatment after using IV antibiotics to treat an appendix mass.
Anatomy
2.5 cm below the connection with the terminal ileum, the appendix originates at the convergence of the taeniae coli on the posteromedial side of the caecum. The appendix can lay in the following positions: retrocaecal (70%), pelvic (20%), subcaecal (2%) and pre- or post-ileal (5%). Its length ranges from 1.2 to 22.0 cm. The appendicular artery, a branch of the ileocolic artery, passes via its mesentery, the mesoappendix. To empty into ileocaecal nodes, lymphatics from the appendix pass through the mesoappendix.
Investigations
FBC, U&Es, LFT, amylase, CRP, and urinalysis (to look into stomach pain) are performed prior to surgery. It is recommended that women who are fertile have a pregnancy test done. If sepsis symptoms are present, antibiotics are initiated; if not, a single preventive dosage is administered at the time of operation.
Post-op: If the appendix is inflamed, antibiotics may need to be continued. prophlyaxis for DVT.
Procedure
can be carried out openly or by laparoscopy.
Make sure you always look at the patient on the table to check for any lumps.
Access: The subcutaneous fat is separated and the external oblique aponeurosis is exposed by a Lanz (horizontal skin crease) incision, which is centered on McBurney's point, which is two thirds the distance from the umbilicus to the anterior superior iliac spine.
With scissors, a tiny incision is created in the direction of the fibers. Similar to transversus, internal oblique muscle is divided bluntly along the direction of its fibers, and the opening is gradually widened with retractors.
The peritoneum is carefully lifted up with a clip after it is revealed.
After that, the first clip is moved and a second clip is positioned. Make sure there is no bowel trapped between the clips by palpating the area before making a tiny cut and then extending.
Identification: Pus or free fluid are looked for in the peritoneal cavity. The appendix's base is located by identifying the caecum and following the taeniae, after which it is gently bluntly dissected to release it from inflammatory adhesions. Using Babcock's forceps, the appendix is removed.
Even if the appendix is determined to be normal (or "lily-white"), it should still be removed; still, the small bowel needs to be thoroughly examined to rule out mesenteric adenitis, terminal ileitis, or Meckel's diverticulum.
The right ovary and fallopian tube should be examined in females.
Resection: To maintain hemostasis, the mesoappendix is separated and clipped after being tied off. The appendix's base is crushed with a crushing clamp, and it is then transfixed or tied off before removal. The appendix is transported to be examined histologically. Typically, a purse string suture is used to bury the appendix stump. If there is pus or inflammatory fluid in the cavity, it should be cleaned.
Closure: Subsequently, the incision is layered shut. The peritoneum is sutured continuously, followed by interrupted sutures to the muscle layers and finally continuous sutures to the external oblique—the latter of which is crucial in preventing more hernias. For the skin, a subcuticular absorbable suture is typically utilized. Infiltration of local anesthetic lessens post-operative pain.
Laparoscopic appendicectomy: This alternate method can be both therapeutic and diagnostic, making it particularly helpful for women whose diagnosis may be unclear.
The mesoappendix is separated from the appendix and loop sutured or endostapled across the appendix base before being excised and removed through a port after the capnoperitoneum and port insertion.
Complications
Very rare, but when present indicates the severity of peritonitis or inflammation; examples include ileus, hemorrhage, wound infection, and, less frequently, pelvic or local abscesses.
Prognosis
usually good with mortality less than 1%, however in older adults or in cases of perforation, this may be greater.
An acute case of appendicitis. interval treatment after using IV antibiotics to treat an appendix mass.
Anatomy
2.5 cm below the connection with the terminal ileum, the appendix originates at the convergence of the taeniae coli on the posteromedial side of the caecum. The appendix can lay in the following positions: retrocaecal (70%), pelvic (20%), subcaecal (2%) and pre- or post-ileal (5%). Its length ranges from 1.2 to 22.0 cm. The appendicular artery, a branch of the ileocolic artery, passes via its mesentery, the mesoappendix. To empty into ileocaecal nodes, lymphatics from the appendix pass through the mesoappendix.
Investigations
FBC, U&Es, LFT, amylase, CRP, and urinalysis (to look into stomach pain) are performed prior to surgery. It is recommended that women who are fertile have a pregnancy test done. If sepsis symptoms are present, antibiotics are initiated; if not, a single preventive dosage is administered at the time of operation.
Post-op: If the appendix is inflamed, antibiotics may need to be continued. prophlyaxis for DVT.
Procedure
can be carried out openly or by laparoscopy.
Make sure you always look at the patient on the table to check for any lumps.
Access: The subcutaneous fat is separated and the external oblique aponeurosis is exposed by a Lanz (horizontal skin crease) incision, which is centered on McBurney's point, which is two thirds the distance from the umbilicus to the anterior superior iliac spine.
With scissors, a tiny incision is created in the direction of the fibers. Similar to transversus, internal oblique muscle is divided bluntly along the direction of its fibers, and the opening is gradually widened with retractors.
The peritoneum is carefully lifted up with a clip after it is revealed.
After that, the first clip is moved and a second clip is positioned. Make sure there is no bowel trapped between the clips by palpating the area before making a tiny cut and then extending.
Identification: Pus or free fluid are looked for in the peritoneal cavity. The appendix's base is located by identifying the caecum and following the taeniae, after which it is gently bluntly dissected to release it from inflammatory adhesions. Using Babcock's forceps, the appendix is removed.
Even if the appendix is determined to be normal (or "lily-white"), it should still be removed; still, the small bowel needs to be thoroughly examined to rule out mesenteric adenitis, terminal ileitis, or Meckel's diverticulum.
The right ovary and fallopian tube should be examined in females.
Resection: To maintain hemostasis, the mesoappendix is separated and clipped after being tied off. The appendix's base is crushed with a crushing clamp, and it is then transfixed or tied off before removal. The appendix is transported to be examined histologically. Typically, a purse string suture is used to bury the appendix stump. If there is pus or inflammatory fluid in the cavity, it should be cleaned.
Closure: Subsequently, the incision is layered shut. The peritoneum is sutured continuously, followed by interrupted sutures to the muscle layers and finally continuous sutures to the external oblique—the latter of which is crucial in preventing more hernias. For the skin, a subcuticular absorbable suture is typically utilized. Infiltration of local anesthetic lessens post-operative pain.
Laparoscopic appendicectomy: This alternate method can be both therapeutic and diagnostic, making it particularly helpful for women whose diagnosis may be unclear.
The mesoappendix is separated from the appendix and loop sutured or endostapled across the appendix base before being excised and removed through a port after the capnoperitoneum and port insertion.
Complications
Very rare, but when present indicates the severity of peritonitis or inflammation; examples include ileus, hemorrhage, wound infection, and, less frequently, pelvic or local abscesses.
Prognosis
usually good with mortality less than 1%, however in older adults or in cases of perforation, this may be greater.
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Surgery - Subdural Hemorrhage
Introduction
A collection of blood that forms between the dura mater and the brain's surface is known as a subdural haematoma (SDH).
Acute: In less than a week.
Subacute: 18 to 24 hours.
Chronic: Three weeks in.
Etiology
Shearing pressures from trauma that causes the brain to accelerate and decelerate quickly rip the "bridging veins," or veins that connect the dura to the cortex. Between the dura and arachnoid membranes, bleeding takes place.
Non-accidental injury in children should always be taken into account.
Epidemiology
Acute: Usually affects younger individuals and is linked to significant trauma (5–25% of cases of severe head injuries). greater in frequency than extradural hemorrhage.
Chronic: Research indicates that the incidence of this condition is 1-2/5/100,000 in the elderly.
History
Acute: Patient has a history of head trauma and is not fully aware.
Subacute: Changing mental status and increasing headaches 7–14 days after injury.
Chronic: May show up as focal weakness, headache, disorientation, cognitive decline, mental symptoms, or seizures.
Have a low index of suspicion, especially in the case of older people and alcoholics, as there may not be a history of trauma or falls.
Examination
Acute: Lower GCS. Large hemorrhages that cause a midline shift can also cause bradycardia, diminished consciousness, and an ipsilateral fixed dilated pupil due to compression of the ipsilateral IIIrd nerve parasympathetic fibres.
Chronic: There may be focal neurological signs (hemiparesis, reflex asymmetry, papilloedema, malfunction of the IIIrd or VIth nerves), but neurological testing may be normal.
Investigations
The CT head is a lump with a crescent or sickle shape that is concave across the surface of the brain (an extradural has a lentiform shape). The CT look varies over time. Chronic subdurals are hypodense (approaching that of CSF) while acute subdurals are hyperdense (becoming isodense over 1-3 weeks; presence may be inferred from indications such as effacement of sulci, midline shift, ventricular compression, and obliteration of basal cisterns).
The brain's MRI is more sensitive, particularly for isodense or tiny SDHs.
Management
Acute: ABC and cervical spine control are given priority in the ATLS procedure. Cervical spine injuries are far more likely to occur following a head injury. GCS and pupillary reactivity are disabilities. Lift your head and think about osmotic diuresis with mannitol and/or hyperventilation if there are indications of an elevated ICP. After stabilization, take the CT head.
Cautious: Particularly when there is a tiny and minor midline shift (SDH <10 mm in thickness and <5 mm in midline shift).
Surgical: For symptomatic subdurals larger than 10 mm, promptly do a burr hole or craniotomy and evacuation, with a midline displacement of more than 5 mm (best if within 4 hours). Devices for ICP monitoring could be installed.
Chronic: Surgical treatment with a burr hole or craniotomy and drainage (a drain may be left in for 24–72 hours) if there is symptomatic or a mass effect on imaging. The recommended course of treatment for asymptomatic SDH without a noticeable mass effect is to use serial imaging to watch for spontaneous resorption. Resorbing hematomas can necessitate a craniotomy along with a membranectomy.
Younger children: If open fontanelle percutaneous aspiration is not successful, a subdural to peritoneal shunt can be implanted.
Complications
Increased intracranial pressure, cerebral edema that may lead to further ischemic brain injury, and mass effect (such as a transtentorial or uncal herniation).
After surgery: The following conditions are relatively common: intracerebral hemorrhage, subdural empyema, meningitis or brain abscess, tension pneumocephalus, seizures, and recurrence (up to 33% for SDH).
Prognosis
Acute: The primary determinant of outcome is the underlying brain damage.
Because there is a lower frequency of underlying brain injury, chronic SDHs often have better results than acute SDHs; three-fourths of patients treated with surgery have satisfactory outcomes.
Introduction
A collection of blood that forms between the dura mater and the brain's surface is known as a subdural haematoma (SDH).
Acute: In less than a week.
Subacute: 18 to 24 hours.
Chronic: Three weeks in.
Etiology
Shearing pressures from trauma that causes the brain to accelerate and decelerate quickly rip the "bridging veins," or veins that connect the dura to the cortex. Between the dura and arachnoid membranes, bleeding takes place.
Non-accidental injury in children should always be taken into account.
Epidemiology
Acute: Usually affects younger individuals and is linked to significant trauma (5–25% of cases of severe head injuries). greater in frequency than extradural hemorrhage.
Chronic: Research indicates that the incidence of this condition is 1-2/5/100,000 in the elderly.
History
Acute: Patient has a history of head trauma and is not fully aware.
Subacute: Changing mental status and increasing headaches 7–14 days after injury.
Chronic: May show up as focal weakness, headache, disorientation, cognitive decline, mental symptoms, or seizures.
Have a low index of suspicion, especially in the case of older people and alcoholics, as there may not be a history of trauma or falls.
Examination
Acute: Lower GCS. Large hemorrhages that cause a midline shift can also cause bradycardia, diminished consciousness, and an ipsilateral fixed dilated pupil due to compression of the ipsilateral IIIrd nerve parasympathetic fibres.
Chronic: There may be focal neurological signs (hemiparesis, reflex asymmetry, papilloedema, malfunction of the IIIrd or VIth nerves), but neurological testing may be normal.
Investigations
The CT head is a lump with a crescent or sickle shape that is concave across the surface of the brain (an extradural has a lentiform shape). The CT look varies over time. Chronic subdurals are hypodense (approaching that of CSF) while acute subdurals are hyperdense (becoming isodense over 1-3 weeks; presence may be inferred from indications such as effacement of sulci, midline shift, ventricular compression, and obliteration of basal cisterns).
The brain's MRI is more sensitive, particularly for isodense or tiny SDHs.
Management
Acute: ABC and cervical spine control are given priority in the ATLS procedure. Cervical spine injuries are far more likely to occur following a head injury. GCS and pupillary reactivity are disabilities. Lift your head and think about osmotic diuresis with mannitol and/or hyperventilation if there are indications of an elevated ICP. After stabilization, take the CT head.
Cautious: Particularly when there is a tiny and minor midline shift (SDH <10 mm in thickness and <5 mm in midline shift).
Surgical: For symptomatic subdurals larger than 10 mm, promptly do a burr hole or craniotomy and evacuation, with a midline displacement of more than 5 mm (best if within 4 hours). Devices for ICP monitoring could be installed.
Chronic: Surgical treatment with a burr hole or craniotomy and drainage (a drain may be left in for 24–72 hours) if there is symptomatic or a mass effect on imaging. The recommended course of treatment for asymptomatic SDH without a noticeable mass effect is to use serial imaging to watch for spontaneous resorption. Resorbing hematomas can necessitate a craniotomy along with a membranectomy.
Younger children: If open fontanelle percutaneous aspiration is not successful, a subdural to peritoneal shunt can be implanted.
Complications
Increased intracranial pressure, cerebral edema that may lead to further ischemic brain injury, and mass effect (such as a transtentorial or uncal herniation).
After surgery: The following conditions are relatively common: intracerebral hemorrhage, subdural empyema, meningitis or brain abscess, tension pneumocephalus, seizures, and recurrence (up to 33% for SDH).
Prognosis
Acute: The primary determinant of outcome is the underlying brain damage.
Because there is a lower frequency of underlying brain injury, chronic SDHs often have better results than acute SDHs; three-fourths of patients treated with surgery have satisfactory outcomes.
- Published on
Surgery - Hemorrhoids
Introduction
Engorged and swollen anal vascular cushions have a propensity to protrude, hemorrhage, or prolapse into the anal canal, which aids in anal closure.
arranged according to location:
.. Internal (originating above the dentate line from the superior hemorrhoidal plexus). External (below dentate line, from inferior hemorrhoidal plexus)
categorized according to prolapse degree:
.. Initial degree: Non-prolapse hemorrhoids. Second degree: Prolapse that occurs with defecation but goes away on its own. Third degree: Prolapse that needs to be manually reduced. Fourth degree: Non-reducible prolapse.
Risk Factors
pregnancy, extended straining, constipation, and portal hypertension.
Epidemiology
Common (4–5% prevalence). The peak age range is 45–65. mostly a Westernized world sickness.
H HISTORY
usually without symptoms.
Bleeding, typically bright red blood, on toilet paper or dripping into a pan following the passage of stool is possible, but it is never mixed in with the stool itself. The absence of warning signs such as weight loss, anemia, altered bowel habits, clotted, black blood, or mucus mixed with feces is necessary. Itching, anal tumors, or prolapsing tissue are other symptoms. When external hemorrhoids thrombose, they can be extremely painful.
Examination
Uncomplicated hemorrhoids are impalpable and only visible on proctoscopy, where they manifest as red, granular mucosal swellings that bulge into view upon straining and withdrawing the proctoscope at 3, 7, and 11 o'clock. First- or second-degree hemorrhoids are typically not visible on external inspection. Anal tags, anal fissure, rectal prolapse, polyps, or tumors are examples of differential diagnosis.
Pathogenesis
Overstretching results in anal engorgement, shearing by hard stools, and downward displacement, which in turn causes hypertrophy and fragmentation of muscle and elastin fibers, disruption of tissue organization, elevated resting anal pressures, and bleeding from pre-sinusoidal arterioles.
Investigations
To rule out a rectal source of bleeding, either a rigid or flexible sigmoidoscopy is typically necessary because hemorrhoids are frequently associated with colorectal tumors.
Management
Conservative: Suggestions for a diet rich in fiber, water consumption, and large laxatives. There are topical lotions that mix a local anesthetic with mild astringents; those that contain corticosteroids should only be applied temporarily.
For first or second degree local therapy: Injection sclerotherapy involves injecting 5% phenol in almond oil into the submucosa above a hemorrhoid, above the dentate line (where sensory fibers are absent), causing inflammation and fibrosis that leads to mucosal fixation. Banding: Barron's bands are placed immediately proximal to the hemorrhage, including tissue that disappears in two to three days, leaving a tiny ulcer to heal naturally. higher chances of recovery but sometimes more agony. Hemorrhoidal artery ligation, radiofrequency ablation, and infrared coagulation are further methods.
Surgical: Saved for third- or fourth-degree hemorrhoids that present with symptoms. In order to prevent stricturing, the Milligan-Morgan open hemorrhoidectomy entails removing the hemorrhoidal cushions while maintaining the skin and mucosal bridges that connect the hemorrhoids. In order to "hitch up" the prolapsing anal lining and interrupt the proximal blood flow, stapled hemorrhoidectomy involves mucosectomy 2 cm proximal to the dentate line (# discomfort and shorter convalescence in randomized control trials). laxatives to prevent constipation after surgery, metronidazole.
Complications
thrombosis, prolapse, and bleeding. Prostatitis, perineal sepsis, hepatic abscesses, retroperitoneal sepsis, and infrequently impotence are side effects of injectable sclerotherapy. Pain, bleeding, recurrence, and, less frequently, incontinence from sphincteric damage and anal stricture following a hemorrhoidectomy.
Prognosis
Frequently a chronic issue requiring repeated local treatments due to symptom recurrence.
Severe symptoms may be permanently relieved by surgery.
Introduction
Engorged and swollen anal vascular cushions have a propensity to protrude, hemorrhage, or prolapse into the anal canal, which aids in anal closure.
arranged according to location:
.. Internal (originating above the dentate line from the superior hemorrhoidal plexus). External (below dentate line, from inferior hemorrhoidal plexus)
categorized according to prolapse degree:
.. Initial degree: Non-prolapse hemorrhoids. Second degree: Prolapse that occurs with defecation but goes away on its own. Third degree: Prolapse that needs to be manually reduced. Fourth degree: Non-reducible prolapse.
Risk Factors
pregnancy, extended straining, constipation, and portal hypertension.
Epidemiology
Common (4–5% prevalence). The peak age range is 45–65. mostly a Westernized world sickness.
H HISTORY
usually without symptoms.
Bleeding, typically bright red blood, on toilet paper or dripping into a pan following the passage of stool is possible, but it is never mixed in with the stool itself. The absence of warning signs such as weight loss, anemia, altered bowel habits, clotted, black blood, or mucus mixed with feces is necessary. Itching, anal tumors, or prolapsing tissue are other symptoms. When external hemorrhoids thrombose, they can be extremely painful.
Examination
Uncomplicated hemorrhoids are impalpable and only visible on proctoscopy, where they manifest as red, granular mucosal swellings that bulge into view upon straining and withdrawing the proctoscope at 3, 7, and 11 o'clock. First- or second-degree hemorrhoids are typically not visible on external inspection. Anal tags, anal fissure, rectal prolapse, polyps, or tumors are examples of differential diagnosis.
Pathogenesis
Overstretching results in anal engorgement, shearing by hard stools, and downward displacement, which in turn causes hypertrophy and fragmentation of muscle and elastin fibers, disruption of tissue organization, elevated resting anal pressures, and bleeding from pre-sinusoidal arterioles.
Investigations
To rule out a rectal source of bleeding, either a rigid or flexible sigmoidoscopy is typically necessary because hemorrhoids are frequently associated with colorectal tumors.
Management
Conservative: Suggestions for a diet rich in fiber, water consumption, and large laxatives. There are topical lotions that mix a local anesthetic with mild astringents; those that contain corticosteroids should only be applied temporarily.
For first or second degree local therapy: Injection sclerotherapy involves injecting 5% phenol in almond oil into the submucosa above a hemorrhoid, above the dentate line (where sensory fibers are absent), causing inflammation and fibrosis that leads to mucosal fixation. Banding: Barron's bands are placed immediately proximal to the hemorrhage, including tissue that disappears in two to three days, leaving a tiny ulcer to heal naturally. higher chances of recovery but sometimes more agony. Hemorrhoidal artery ligation, radiofrequency ablation, and infrared coagulation are further methods.
Surgical: Saved for third- or fourth-degree hemorrhoids that present with symptoms. In order to prevent stricturing, the Milligan-Morgan open hemorrhoidectomy entails removing the hemorrhoidal cushions while maintaining the skin and mucosal bridges that connect the hemorrhoids. In order to "hitch up" the prolapsing anal lining and interrupt the proximal blood flow, stapled hemorrhoidectomy involves mucosectomy 2 cm proximal to the dentate line (# discomfort and shorter convalescence in randomized control trials). laxatives to prevent constipation after surgery, metronidazole.
Complications
thrombosis, prolapse, and bleeding. Prostatitis, perineal sepsis, hepatic abscesses, retroperitoneal sepsis, and infrequently impotence are side effects of injectable sclerotherapy. Pain, bleeding, recurrence, and, less frequently, incontinence from sphincteric damage and anal stricture following a hemorrhoidectomy.
Prognosis
Frequently a chronic issue requiring repeated local treatments due to symptom recurrence.
Severe symptoms may be permanently relieved by surgery.
- Published on
Surgery - Perianal fistula and abscess
Introduction
A collection of pus in the perianal area is called a perianal abscess.
A perianal fistula is an aberrant, persistently infected channel that connects the rectum or anal canal to the skin of the perianal region.
Types of abscesses: Submucous, subcutaneous, intersphincteric, ischiorectal, and pelvirectal abscesses are categorized based on their location.
Types of fistulas: According to Park, there are five different types of sphincters: superficial, transsphincteric, suprasphincteric, extrasphincteric, or low anal (below puborectalis), high anal (at or above puborectalis), and pelvirectal (including levator ani).
Etiology
Superinfection that extends to perianal tissues is caused by obstruction and stasis of the anal crypt glands. Once an abscess discharges or is removed, fistulae may form. They can also result in multiple perineal fistulae (pepperpot perineum), a consequence of Crohn's disease.
perhaps linked to malignancy (rectal cancer) or diabetes.
Epidemiology
peak incidence in the third to fourth decade, common. greater in men.
History
persistent throbbing discomfort in the lower leg. Fistulae cause sporadic discharge that may be blood- or mucus-stained close to the anal area.
Examination
localized, painful swelling of the perianal region or a little skin incision with discharge close to the anus, which is indicative of a fistula opening. One may feel a region of induration on PR that corresponds to the fistula tract or abscess. Not usually feasible because of sphincter spasm or discomfort.
It can be necessary to do an examination while sedated.
The Goodsall Rule: As a general guideline, locate the internal fistula opening based on where the external fistula opening is located. The fistula enters the anal canal directly and radially if the external orifice is ahead of the anal canal. The fistula tract takes a curved route and opens internally at the posterior midline if the external opening is posterior to the anal canal.
Investigations
Blood: if pyrexial, blood cultures, FBC, CRP, and ESR.
When it comes to intricate fistulae, MRI is quite helpful in enabling a thorough examination of the tracts. enables the planning of surgery to guarantee total excision.
Less helpful than MRI, endoanal ultrasound is nevertheless utilized.
Management
Surgical: Necessitates general anesthesia for surgical care.
Open drainage of an abscess: An incision and drainage operation is the most typical method. Over the abscess, a cruciate incision is created. Locus disintegrates and pus is extracted. After that, the cavity is softly packed and irrigated.
Laying open of fistula: The tract is gently explored using a probe. To show the internal opening, inject methylene blue or hydrogen peroxide into the exterior orifice.
Low fistulae: A fistulotomy is used to treat the condition by opening and cutting the tract, curing away granulation tissue, and enabling secondary intention healing.
To prevent the anal sphincter from being harmed, extreme caution must be used.
High fistulae: Surgical solutions are available for fistulae affecting the upper half of the sphincter complex, where muscle division would result in incontinence. A non-absorbable suture called a seton is inserted through the fistula tract to allow sepsis to drain and to progressively cut through the sphincter while maintaining continence. Advancement flap: A mucosal advancement flap closes the internal aperture after the exterior portion of the fistula is removed.
Fistula plug: To promote closure, a xenograft composed of pig intestinal submucosa is placed into the tract. Fibrin glue: Fibrin glue obliterates the fistula tract. Poor long-term outcomes.
Antibiotics: Surgery is the preferred method of treating abscesses; however, if cellulitis is present, antibiotics may be helpful.
Complications
severe sepsis if left untreated, recurrence. incontinence and harm to the anal sphincter following fistula surgery.
Prognosis
high rate of recurrence without total removal. Recurrence rates with advancement flaps for high fistulae range from 0% to 63%.
Introduction
A collection of pus in the perianal area is called a perianal abscess.
A perianal fistula is an aberrant, persistently infected channel that connects the rectum or anal canal to the skin of the perianal region.
Types of abscesses: Submucous, subcutaneous, intersphincteric, ischiorectal, and pelvirectal abscesses are categorized based on their location.
Types of fistulas: According to Park, there are five different types of sphincters: superficial, transsphincteric, suprasphincteric, extrasphincteric, or low anal (below puborectalis), high anal (at or above puborectalis), and pelvirectal (including levator ani).
Etiology
Superinfection that extends to perianal tissues is caused by obstruction and stasis of the anal crypt glands. Once an abscess discharges or is removed, fistulae may form. They can also result in multiple perineal fistulae (pepperpot perineum), a consequence of Crohn's disease.
perhaps linked to malignancy (rectal cancer) or diabetes.
Epidemiology
peak incidence in the third to fourth decade, common. greater in men.
History
persistent throbbing discomfort in the lower leg. Fistulae cause sporadic discharge that may be blood- or mucus-stained close to the anal area.
Examination
localized, painful swelling of the perianal region or a little skin incision with discharge close to the anus, which is indicative of a fistula opening. One may feel a region of induration on PR that corresponds to the fistula tract or abscess. Not usually feasible because of sphincter spasm or discomfort.
It can be necessary to do an examination while sedated.
The Goodsall Rule: As a general guideline, locate the internal fistula opening based on where the external fistula opening is located. The fistula enters the anal canal directly and radially if the external orifice is ahead of the anal canal. The fistula tract takes a curved route and opens internally at the posterior midline if the external opening is posterior to the anal canal.
Investigations
Blood: if pyrexial, blood cultures, FBC, CRP, and ESR.
When it comes to intricate fistulae, MRI is quite helpful in enabling a thorough examination of the tracts. enables the planning of surgery to guarantee total excision.
Less helpful than MRI, endoanal ultrasound is nevertheless utilized.
Management
Surgical: Necessitates general anesthesia for surgical care.
Open drainage of an abscess: An incision and drainage operation is the most typical method. Over the abscess, a cruciate incision is created. Locus disintegrates and pus is extracted. After that, the cavity is softly packed and irrigated.
Laying open of fistula: The tract is gently explored using a probe. To show the internal opening, inject methylene blue or hydrogen peroxide into the exterior orifice.
Low fistulae: A fistulotomy is used to treat the condition by opening and cutting the tract, curing away granulation tissue, and enabling secondary intention healing.
To prevent the anal sphincter from being harmed, extreme caution must be used.
High fistulae: Surgical solutions are available for fistulae affecting the upper half of the sphincter complex, where muscle division would result in incontinence. A non-absorbable suture called a seton is inserted through the fistula tract to allow sepsis to drain and to progressively cut through the sphincter while maintaining continence. Advancement flap: A mucosal advancement flap closes the internal aperture after the exterior portion of the fistula is removed.
Fistula plug: To promote closure, a xenograft composed of pig intestinal submucosa is placed into the tract. Fibrin glue: Fibrin glue obliterates the fistula tract. Poor long-term outcomes.
Antibiotics: Surgery is the preferred method of treating abscesses; however, if cellulitis is present, antibiotics may be helpful.
Complications
severe sepsis if left untreated, recurrence. incontinence and harm to the anal sphincter following fistula surgery.
Prognosis
high rate of recurrence without total removal. Recurrence rates with advancement flaps for high fistulae range from 0% to 63%.
- Published on
Surgery - Rectal Cancer
Introduction
rectal cancer that manifests itself. roughly one-third of colorectal cancers are caused by this.
AET Information Technology
environmental and genetic variables. When genes that inhibit tumor growth become active or oncogenes get activated, the cells are able to evade growth regulatory control.
Neoplasia can develop from severe dysplasia in adenomatous polyps.
Risk Factors
High-fat, low-fiber diet; polyps found in the colon; history of colorectal cancer in the family; inflammatory bowel illness (especially chronic ulcerative colitis). Hereditary non-polyposis colorectal cancer and familial adenomatous polyposis are examples of familial syndromes.
Epidemiology
There are about 14,000 new instances of rectal cancer in the UK every year. 60–65 years old on average at diagnosis. Males are more likely than females to get rectal cancer.
History
Most often, there is rectal bleeding or blood or mucus mixed up with the stools. Rectal masses can also show up as tenesmus, or the sense that the bowel is not completely emptying after a defecate. Through the NHS bowel cancer screening program, patients may come with positive faecal occult blood tests even when they are asymptomatic.
ANALYZATION
Palpable low-lying rectal tumors may be detected during rectal examination, along with indications of anemia, abdominal distension, and obstructive lesions. If hepatomegaly, metastatic illness, or "shifting dullness" of ascites. A rigid sigmoidoscopy ought to be carried out.
Pathogenesis
98% of them are adenocarcinomas. Sarcoma, melanoma, lymphoma, and carcinoid tumors are uncommon additional tumor forms. The TNM staging system or the modified Dukes system are two staging systems.
Investing in education
Blood: tumor markers (CEA), LFT, and FBC (for anemia).
Stool: Checking for occult blood in the feces.
Endoscopy: colonoscopy and sigmoidoscopy. allows for biopsy and visualization. If a little carcinoma is isolated and in situ, polypectomy may also be performed.
Imaging: Endoanal ultrasound, MRI rectum for local staging and treatment planning, CT chest, abdomen, and pelvis staging. PET imaging. Refer to Pathology/Pathogenesis, please.
TNM Staging
TNM Staging
T1 Tumour invades submucosa
T2 Tumour invades muscularis propria
T3 Tumour invades into subserosa, pericolic or perirectal tissue
T4 Tumour invades other organs or through peritoneum
N0 No nodal metastases
N1 Metastases in 1–3 perirectal nodes
N2 Metastases in more than 4 perirectal nodes
N3 Nodal metastases along a vascular trunk
Management
Depending on the stage and coexisting conditions, a multidisciplinary team of radiologists, surgeons, oncologists, gastroenterologists, and pathologists plans the patient's care.
Transanal excision or endoscopic mucosal resection are two treatment options for pedicunculated polyps and tiny, early-stage (in situ or T1) tumors. This should not be utilized if nodal involvement is suspected.
Neoadjuvant radiation and chemotherapy: The high local recurrence rate following surgery can be reduced with preoperative chemotherapy and radiation therapy (long course or short course). Benefits include respectability gain, downstaging, and perhaps sphincter sparing.
Chemotherapy: 5-fluorouracil combination chemotherapy regimens are frequent (e.g. FOLFOX). In cases of metastatic disease, chemotherapy may be combined with bevacizumab (anti-vascular endothelial growth factor, anti-VEGF) and cetuximab (anti-EGFR, anti-epidermal growth factor receptor).
Surgery: Laparoscopic or open methods. Anterior resection (typically a 2 cm defuncting stoma for tumors of the middle and upper rectum, and rarely the lower rectum if clear margins are possible). Total mesorectal excision, or TME, lowers the local recurrence rate in rectal surgery. When the anal sphincter cannot be preserved, abdominal perineal resection is performed.
Pelvic exenteration is a drastic surgery that might be used for advanced tumors or local recurrences. The lower colon and rectum, lower ureters and bladder, internal reproductive organs, perineum, draining lymph nodes, and pelvic peritoneum are all removed in this procedure. Emergency: Proximal stoma may be defunct due to Hartmann's surgery or unresectable tumors.
Complications
Metastatic illness, recurrence, fistula formation, obstruction or perforation of the bowel. side effects related to the course of treatment. Anastomotic leak during surgery. Ileus, bleeding.
Prognosis
After five years, Dukes A and B have survived at 80–90%, 40–70%, 12–40%, and 7–15%, respectively.
With surgically treatable isolated liver metastases, the 5-year survival rate is 25–40%.
Introduction
rectal cancer that manifests itself. roughly one-third of colorectal cancers are caused by this.
AET Information Technology
environmental and genetic variables. When genes that inhibit tumor growth become active or oncogenes get activated, the cells are able to evade growth regulatory control.
Neoplasia can develop from severe dysplasia in adenomatous polyps.
Risk Factors
High-fat, low-fiber diet; polyps found in the colon; history of colorectal cancer in the family; inflammatory bowel illness (especially chronic ulcerative colitis). Hereditary non-polyposis colorectal cancer and familial adenomatous polyposis are examples of familial syndromes.
Epidemiology
There are about 14,000 new instances of rectal cancer in the UK every year. 60–65 years old on average at diagnosis. Males are more likely than females to get rectal cancer.
History
Most often, there is rectal bleeding or blood or mucus mixed up with the stools. Rectal masses can also show up as tenesmus, or the sense that the bowel is not completely emptying after a defecate. Through the NHS bowel cancer screening program, patients may come with positive faecal occult blood tests even when they are asymptomatic.
ANALYZATION
Palpable low-lying rectal tumors may be detected during rectal examination, along with indications of anemia, abdominal distension, and obstructive lesions. If hepatomegaly, metastatic illness, or "shifting dullness" of ascites. A rigid sigmoidoscopy ought to be carried out.
Pathogenesis
98% of them are adenocarcinomas. Sarcoma, melanoma, lymphoma, and carcinoid tumors are uncommon additional tumor forms. The TNM staging system or the modified Dukes system are two staging systems.
Investing in education
Blood: tumor markers (CEA), LFT, and FBC (for anemia).
Stool: Checking for occult blood in the feces.
Endoscopy: colonoscopy and sigmoidoscopy. allows for biopsy and visualization. If a little carcinoma is isolated and in situ, polypectomy may also be performed.
Imaging: Endoanal ultrasound, MRI rectum for local staging and treatment planning, CT chest, abdomen, and pelvis staging. PET imaging. Refer to Pathology/Pathogenesis, please.
TNM Staging
TNM Staging
T1 Tumour invades submucosa
T2 Tumour invades muscularis propria
T3 Tumour invades into subserosa, pericolic or perirectal tissue
T4 Tumour invades other organs or through peritoneum
N0 No nodal metastases
N1 Metastases in 1–3 perirectal nodes
N2 Metastases in more than 4 perirectal nodes
N3 Nodal metastases along a vascular trunk
Management
Depending on the stage and coexisting conditions, a multidisciplinary team of radiologists, surgeons, oncologists, gastroenterologists, and pathologists plans the patient's care.
Transanal excision or endoscopic mucosal resection are two treatment options for pedicunculated polyps and tiny, early-stage (in situ or T1) tumors. This should not be utilized if nodal involvement is suspected.
Neoadjuvant radiation and chemotherapy: The high local recurrence rate following surgery can be reduced with preoperative chemotherapy and radiation therapy (long course or short course). Benefits include respectability gain, downstaging, and perhaps sphincter sparing.
Chemotherapy: 5-fluorouracil combination chemotherapy regimens are frequent (e.g. FOLFOX). In cases of metastatic disease, chemotherapy may be combined with bevacizumab (anti-vascular endothelial growth factor, anti-VEGF) and cetuximab (anti-EGFR, anti-epidermal growth factor receptor).
Surgery: Laparoscopic or open methods. Anterior resection (typically a 2 cm defuncting stoma for tumors of the middle and upper rectum, and rarely the lower rectum if clear margins are possible). Total mesorectal excision, or TME, lowers the local recurrence rate in rectal surgery. When the anal sphincter cannot be preserved, abdominal perineal resection is performed.
Pelvic exenteration is a drastic surgery that might be used for advanced tumors or local recurrences. The lower colon and rectum, lower ureters and bladder, internal reproductive organs, perineum, draining lymph nodes, and pelvic peritoneum are all removed in this procedure. Emergency: Proximal stoma may be defunct due to Hartmann's surgery or unresectable tumors.
Complications
Metastatic illness, recurrence, fistula formation, obstruction or perforation of the bowel. side effects related to the course of treatment. Anastomotic leak during surgery. Ileus, bleeding.
Prognosis
After five years, Dukes A and B have survived at 80–90%, 40–70%, 12–40%, and 7–15%, respectively.
With surgically treatable isolated liver metastases, the 5-year survival rate is 25–40%.
- Published on
Surgery - Rectal Prolapse
Introduction
the whole thickness rectal wall or aberrant rectal mucosa protrusion through the anus.
Etiology
Incomplete prolapse: This condition, which affects only the mucosa and can occur in both adults and children, is linked to hemorrhoids, constipation, and prolonged straining.
Total prolapse: primarily affects adults and involves the entire rectal wall. It is linked to weak pelvic and anal muscles. Constipation, aging, persistent straining, paralysis of the sphincter, neurological disorders such multiple sclerosis, and childhood cystic fibrosis.
Epidemiology
comparatively typical. There are two peaks: in younger children (male: female) and in older people (female: male is 6: 1).
History
Bulging anal mass that could need to be replaced digitally. hemorrhage from PR related to constipation, faecal incontinence, or mucus passage. may show up as an emergency if the prolapse is strangulated or intractable.
Examination
Straining may reveal the prolapse, which ranges in intensity from protruding rectal mucosa to a full-blown rectal prolapse (if >5 cm, always a complete prolapse). may exhibit necrosis or develop ulcers if the vascular supply is impaired.
lower tone of the anal sphincter.
Investigations
Imaging methods include barium enema, defaecating proctogram, and protosigmoidoscopy.
Further: Pudendal nerve research, anal sphincter manometry.
Sweat chloride test: Approximately 10% of children will test positive for cystic fibrosis.
Management
Conservative: Using a lot of laxatives to treat constipation. A high-fiber diet combined with constipation medication is typically adequate for children.
Emergency: If sufficient analgesia is provided, acute prolapse can be manually controlled. Patients will likely have considerable edema and should be treated with ice packs topically before attempting manual reduction. If the bowel is gangrenous, a rectosigmoidectomy will be necessary.
Surgical: Incomplete prolapse: Mucosal banding, hemorrhoidectomy, or submucosal injection sclerotherapy using phenol in oil are possible options.
Total prolapse: Laparoscopic, abdominal, or perineal methods of surgical repair; for example, Ripstein rectopexy, in which the rectum is mobilized and fixed to the sacrum using nonabsorbable sutures. Resection rectopexy, also known as Delorme's operation, involves plication of the rectal muscle beneath the excised rectal mucosa. In certain situations, anal sphincter repair may be necessary. The Altemeir surgery involves coloanal anastomosis and the resection of the prolapsed rectum and sigmoid colon from below.
Complications
incontinence, rectal bleeding, and mucosal ulcers. Rarely, prolapsed colon necrosis and strangulation.
Prognosis
Children typically experience spontaneous resolution. Generally favorable in adults with appropriate treatment, although there is a 15% recurrence rate.
Introduction
the whole thickness rectal wall or aberrant rectal mucosa protrusion through the anus.
Etiology
Incomplete prolapse: This condition, which affects only the mucosa and can occur in both adults and children, is linked to hemorrhoids, constipation, and prolonged straining.
Total prolapse: primarily affects adults and involves the entire rectal wall. It is linked to weak pelvic and anal muscles. Constipation, aging, persistent straining, paralysis of the sphincter, neurological disorders such multiple sclerosis, and childhood cystic fibrosis.
Epidemiology
comparatively typical. There are two peaks: in younger children (male: female) and in older people (female: male is 6: 1).
History
Bulging anal mass that could need to be replaced digitally. hemorrhage from PR related to constipation, faecal incontinence, or mucus passage. may show up as an emergency if the prolapse is strangulated or intractable.
Examination
Straining may reveal the prolapse, which ranges in intensity from protruding rectal mucosa to a full-blown rectal prolapse (if >5 cm, always a complete prolapse). may exhibit necrosis or develop ulcers if the vascular supply is impaired.
lower tone of the anal sphincter.
Investigations
Imaging methods include barium enema, defaecating proctogram, and protosigmoidoscopy.
Further: Pudendal nerve research, anal sphincter manometry.
Sweat chloride test: Approximately 10% of children will test positive for cystic fibrosis.
Management
Conservative: Using a lot of laxatives to treat constipation. A high-fiber diet combined with constipation medication is typically adequate for children.
Emergency: If sufficient analgesia is provided, acute prolapse can be manually controlled. Patients will likely have considerable edema and should be treated with ice packs topically before attempting manual reduction. If the bowel is gangrenous, a rectosigmoidectomy will be necessary.
Surgical: Incomplete prolapse: Mucosal banding, hemorrhoidectomy, or submucosal injection sclerotherapy using phenol in oil are possible options.
Total prolapse: Laparoscopic, abdominal, or perineal methods of surgical repair; for example, Ripstein rectopexy, in which the rectum is mobilized and fixed to the sacrum using nonabsorbable sutures. Resection rectopexy, also known as Delorme's operation, involves plication of the rectal muscle beneath the excised rectal mucosa. In certain situations, anal sphincter repair may be necessary. The Altemeir surgery involves coloanal anastomosis and the resection of the prolapsed rectum and sigmoid colon from below.
Complications
incontinence, rectal bleeding, and mucosal ulcers. Rarely, prolapsed colon necrosis and strangulation.
Prognosis
Children typically experience spontaneous resolution. Generally favorable in adults with appropriate treatment, although there is a 15% recurrence rate.
