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Surgery - Positioning the Patient
Getting the patient to the surgical table • The surgical team plays a role in ensuring patient safety during and after surgery. Ensure compliance with basic safety guidelines.
• The anaesthetist is responsible for maintaining the patient's airway by coordinating all movements. • Avoid dislodging IV cannulae, epidural sites, or existing drains. • Use approved manual handling techniques, such as a 'Patslide' or comparable device, instead of lifting patients. • Take special precautions with prosthetic joints that may dislocate during relaxation, unstable fractures, Rheumatoid arthritis related instability, ulcers, or skin sores.
Once in position. • Prevent diathermy exit point burns by ensuring no patient points come into contact with the operating table's metal surface. • Properly pad bony prominences and thin skin areas, such as the neck of the fibula in leg stirrups. • Ensure diathermy pads are properly applied and not impacted by skin preparations. • Provide adequate patient support, especially if the table is likely to shift, tilt, or rotate throughout the procedure (e.g., arm, thoracic, and abdominal supports for lateral positions, shoulder bolsters for head down positions). • When doing procedures that need access to the perineum, ensure sufficient pelvic support while exposing the perineum over the end of the operating table.
• Plan the placement of ancillary equipment. For instance, where will video stacks be located? Is more than one energy source needed, and where will the generators be located? Is there access to mobile imaging equipment or on-table radiography? Position all equipment to offer the surgical team enough access to the patient.
Getting the patient to the surgical table • The surgical team plays a role in ensuring patient safety during and after surgery. Ensure compliance with basic safety guidelines.
• The anaesthetist is responsible for maintaining the patient's airway by coordinating all movements. • Avoid dislodging IV cannulae, epidural sites, or existing drains. • Use approved manual handling techniques, such as a 'Patslide' or comparable device, instead of lifting patients. • Take special precautions with prosthetic joints that may dislocate during relaxation, unstable fractures, Rheumatoid arthritis related instability, ulcers, or skin sores.
Once in position. • Prevent diathermy exit point burns by ensuring no patient points come into contact with the operating table's metal surface. • Properly pad bony prominences and thin skin areas, such as the neck of the fibula in leg stirrups. • Ensure diathermy pads are properly applied and not impacted by skin preparations. • Provide adequate patient support, especially if the table is likely to shift, tilt, or rotate throughout the procedure (e.g., arm, thoracic, and abdominal supports for lateral positions, shoulder bolsters for head down positions). • When doing procedures that need access to the perineum, ensure sufficient pelvic support while exposing the perineum over the end of the operating table.
• Plan the placement of ancillary equipment. For instance, where will video stacks be located? Is more than one energy source needed, and where will the generators be located? Is there access to mobile imaging equipment or on-table radiography? Position all equipment to offer the surgical team enough access to the patient.
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Pathology - Pancreatic ductal carcinoma
Definition: A malignant epithelial tumor in the pancreas consisting of infiltrating duct-like features.
Epidemiology • The most prevalent kind of pancreatic neoplasm. • Typically observed in individuals over 60 years old, with a slightly higher prevalence in men. • In developed countries, the incidence ranges between 1-10 per 100,000.
Aetiology • Smoking is the most widely acknowledged risk factor.
Carcinogenesis: Mutations that activate KRAS. • Decreased function of TP53, P16, and DPC4.
Presentation: persistent upper abdomen pain and significant weight loss. • Head tumors can produce obstructive jaundice. • The sudden onset of diabetes mellitus is also a suspicious finding.
Macroscopy reveals a firm tumor mass within the pancreas, typically originating in the head but can occur anywhere in the organ. Pancreatic carcinomas are often well to moderately differentiated adenocarcinomas, with infiltrating malignant cells forming well-developed glandular structures. • Abundant fibroblastic stroma surrounds infiltrating glands. • Perineural invasion is widespread and likely contributes to high rates of peripancreatic tumour extension.
Prognosis: Extremely bad, with 5-year survival rates below 5%.
Definition: A malignant epithelial tumor in the pancreas consisting of infiltrating duct-like features.
Epidemiology • The most prevalent kind of pancreatic neoplasm. • Typically observed in individuals over 60 years old, with a slightly higher prevalence in men. • In developed countries, the incidence ranges between 1-10 per 100,000.
Aetiology • Smoking is the most widely acknowledged risk factor.
Carcinogenesis: Mutations that activate KRAS. • Decreased function of TP53, P16, and DPC4.
Presentation: persistent upper abdomen pain and significant weight loss. • Head tumors can produce obstructive jaundice. • The sudden onset of diabetes mellitus is also a suspicious finding.
Macroscopy reveals a firm tumor mass within the pancreas, typically originating in the head but can occur anywhere in the organ. Pancreatic carcinomas are often well to moderately differentiated adenocarcinomas, with infiltrating malignant cells forming well-developed glandular structures. • Abundant fibroblastic stroma surrounds infiltrating glands. • Perineural invasion is widespread and likely contributes to high rates of peripancreatic tumour extension.
Prognosis: Extremely bad, with 5-year survival rates below 5%.
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Pathology – Chronic Pancreatitis
chronic pancreatitis is defined as a prolonged inflammation of the pancreas that causes irreversible loss of function.Chronic pancreatitis can closely resemble pancreatic cancer in clinical, radiological, and pathological aspects.
Epidemiology • Uncommon
. Aetiology: • Most instances are linked to alcohol abuse. • A tiny percentage are suspected to be autoimmune in nature.
Pathogenesis: • Chronic inflammation in the pancreas causes the replacement of functional tissue by fibrous scar tissue. Symptoms include persistent upper abdomen pain and weight loss, as well as late-onset steatorrhea and diabetes mellitus due to gland destruction.
Macroscopy: • The pancreas is replaced by fibrous tissue, resulting in dilated ducts and calcification. 2 The scarred mass can nearly resemble cancer when viewed from a macro perspective.
Histopathology reveals persistent immune cell infiltration in the pancreas, resulting in scarring and loss of exocrine tissues. Endocrine tissue is usually spared until late in the disease. Dilated ducts hold inspissated fluids. Calcification is also prevalent. 2 Small residual atrophic ducts in a fibrous background can mimic infiltrating pancreatic carcinoma. A new variant of chronic pancreatitis has been identified, characterized by a periductal and perivenular inflammatory cell infiltrate rich in IgG4+ plasma cells. Patients generally have elevated serum IgG4 levels. This variation is believed to be autoimmune in nature.
Prognosis: Alcoholic chronic pancreatitis is typically associated with poor outcomes.
Treatment is primarily supportive, and most patients will have other alcohol-related issues. • Steroid medication is effective in treating autoimmune pancreatitis, improving the outlook for patients.
chronic pancreatitis is defined as a prolonged inflammation of the pancreas that causes irreversible loss of function.Chronic pancreatitis can closely resemble pancreatic cancer in clinical, radiological, and pathological aspects.
Epidemiology • Uncommon
. Aetiology: • Most instances are linked to alcohol abuse. • A tiny percentage are suspected to be autoimmune in nature.
Pathogenesis: • Chronic inflammation in the pancreas causes the replacement of functional tissue by fibrous scar tissue. Symptoms include persistent upper abdomen pain and weight loss, as well as late-onset steatorrhea and diabetes mellitus due to gland destruction.
Macroscopy: • The pancreas is replaced by fibrous tissue, resulting in dilated ducts and calcification. 2 The scarred mass can nearly resemble cancer when viewed from a macro perspective.
Histopathology reveals persistent immune cell infiltration in the pancreas, resulting in scarring and loss of exocrine tissues. Endocrine tissue is usually spared until late in the disease. Dilated ducts hold inspissated fluids. Calcification is also prevalent. 2 Small residual atrophic ducts in a fibrous background can mimic infiltrating pancreatic carcinoma. A new variant of chronic pancreatitis has been identified, characterized by a periductal and perivenular inflammatory cell infiltrate rich in IgG4+ plasma cells. Patients generally have elevated serum IgG4 levels. This variation is believed to be autoimmune in nature.
Prognosis: Alcoholic chronic pancreatitis is typically associated with poor outcomes.
Treatment is primarily supportive, and most patients will have other alcohol-related issues. • Steroid medication is effective in treating autoimmune pancreatitis, improving the outlook for patients.
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Pathology – Pancreatic Endocrine Tumors
Pancreatic endocrine tumors are epithelial tumors of the pancreas that exhibit endocrine differentiation. Tumors can be active or inactive based on the presence of an abnormal hormone secretion syndrome.
Epidemiology: Rare tumors account for around 2% of all pancreatic tumors. • Peak incidence occurs between 30 and 60 years
• Unknown in infrequent occurrences. • Approximately 15% are linked to multiple endocrine neoplasia (MEN)-1. • Early genetic events include losses at chromosomes 1 and 11q and gains at 9q. • Increased changes can lead to malignant behaviors. Tumors that produce excess hormones may exhibit symptoms such as hypoglycemia (insulin-producing tumors), recurrent duodenal ulcers (gastrin-producing tumors), and necrolytic migratory erythema (glucagon-producing tumors). • Non-functioning tumors are detected by imaging or when they become large enough to cause symptoms or metastases. Macroscopy reveals well-defined tumors in the pancreas.
Cytopathology: • Fine needle aspiration (FNA) smears are cellular, with a monotonous population of cells present singly, in loose clusters, or in pseudorosettes. • The nuclei typically exhibit a distinct granular chromatin pattern ('salt-and-pepper').
Histopathology: • Tumor cells have granular cytoplasm and form solid nests, trabeculae, glands, or rosettes. • Immunostaining confirms the endocrine origin of the cells through reactivity for markers CD56, chromogranin, and synaptophysin.
Prognosis: • Often difficult to anticipate with confidence.
Long-term follow-up is necessary for all potentially malignant tumors, as metastases can form years after the main lesion is removed.
Clinicopathological classification of pancreatic endocrine tumors.
Well-differentiated endocrine tumor. Benign pancreatic tumors are non-angioinvasive, <2cm in size, with ≤ 2 mitoses />0hpf and ≤ 2% Ki-67 positive cells. Uncertain behavior is associated with the pancreas and one or more of the following features: ≥ 2cm size, 2-10 mitoses/10hpf, > 2% Ki-67 positive cells/10hpf, angioinvasion, or perineural invasion.
Well-differentiated endocrine carcinoma. Histologically low-grade, but with significant local invasion and/or metastasis.
poorly differentiated endocrine carcinoma. Histologically high-grade, having more than 10 mitoses/10 hpf
Pancreatic endocrine tumors are epithelial tumors of the pancreas that exhibit endocrine differentiation. Tumors can be active or inactive based on the presence of an abnormal hormone secretion syndrome.
Epidemiology: Rare tumors account for around 2% of all pancreatic tumors. • Peak incidence occurs between 30 and 60 years
• Unknown in infrequent occurrences. • Approximately 15% are linked to multiple endocrine neoplasia (MEN)-1. • Early genetic events include losses at chromosomes 1 and 11q and gains at 9q. • Increased changes can lead to malignant behaviors. Tumors that produce excess hormones may exhibit symptoms such as hypoglycemia (insulin-producing tumors), recurrent duodenal ulcers (gastrin-producing tumors), and necrolytic migratory erythema (glucagon-producing tumors). • Non-functioning tumors are detected by imaging or when they become large enough to cause symptoms or metastases. Macroscopy reveals well-defined tumors in the pancreas.
Cytopathology: • Fine needle aspiration (FNA) smears are cellular, with a monotonous population of cells present singly, in loose clusters, or in pseudorosettes. • The nuclei typically exhibit a distinct granular chromatin pattern ('salt-and-pepper').
Histopathology: • Tumor cells have granular cytoplasm and form solid nests, trabeculae, glands, or rosettes. • Immunostaining confirms the endocrine origin of the cells through reactivity for markers CD56, chromogranin, and synaptophysin.
Prognosis: • Often difficult to anticipate with confidence.
Long-term follow-up is necessary for all potentially malignant tumors, as metastases can form years after the main lesion is removed.
Clinicopathological classification of pancreatic endocrine tumors.
Well-differentiated endocrine tumor. Benign pancreatic tumors are non-angioinvasive, <2cm in size, with ≤ 2 mitoses />0hpf and ≤ 2% Ki-67 positive cells. Uncertain behavior is associated with the pancreas and one or more of the following features: ≥ 2cm size, 2-10 mitoses/10hpf, > 2% Ki-67 positive cells/10hpf, angioinvasion, or perineural invasion.
Well-differentiated endocrine carcinoma. Histologically low-grade, but with significant local invasion and/or metastasis.
poorly differentiated endocrine carcinoma. Histologically high-grade, having more than 10 mitoses/10 hpf
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Pathology - Pancreatic cystic tumors
Intraductal papillary mucinous neoplasm is a visible, mucin-producing tumor that develops within the pancreatic duct system.
• In men, the majority develop in the head of the pancreas. • Mucin-filled cysts communicate with the pancreatic duct system.
• Mucin-secreting columnar epithelial cells line the cysts, forming papillary projections. Epithelial cells can exhibit varying degrees of atypia. This lesion can give birth to invasive cancer.
Mucinous cystic neoplasms. • A variety of lesions, the majority of which are benign. • Symptoms of an abdominal mass are common among women. • Cystic tumors are well-defined and feature massive mucoid locules. The cysts don't communicate with the pancreatic ductal system. • The cysts are bordered by mucus-secreting columnar epithelial cells and have a dense, ovarian-like stroma beneath. The epithelial component can exhibit mild to severe atypia. Invasive carcinomas can develop within these lesions.
Serous cystic neoplasms. • Most benign lesions are found in women and cause abdominal mass symptoms. • The most frequent kind is serous microcystic adenoma, which causes a well-defined pancreatic mass with multiple tiny cysts and a central scar. The small cysts are bordered by cuboidal cells with a spherical nucleus and transparent cytoplasm, indicating glycogen buildup.
Small pseudopapillary neoplasm. • Pancreatic neoplasm with cystic change. • Commonly found in young women with abdominal mass symptoms. Tumors in the pancreas can form a solid mass with cysts and hemorrhage.
Histologically, the tumor is made up of homogeneous spherical cells that form sheets and cables. Pseudopapillary and cystic areas are caused by poorly cohesive cells. Tumors are typically low-grade, with most patients staying tumor-free for years after resection.
Intraductal papillary mucinous neoplasm is a visible, mucin-producing tumor that develops within the pancreatic duct system.
• In men, the majority develop in the head of the pancreas. • Mucin-filled cysts communicate with the pancreatic duct system.
• Mucin-secreting columnar epithelial cells line the cysts, forming papillary projections. Epithelial cells can exhibit varying degrees of atypia. This lesion can give birth to invasive cancer.
Mucinous cystic neoplasms. • A variety of lesions, the majority of which are benign. • Symptoms of an abdominal mass are common among women. • Cystic tumors are well-defined and feature massive mucoid locules. The cysts don't communicate with the pancreatic ductal system. • The cysts are bordered by mucus-secreting columnar epithelial cells and have a dense, ovarian-like stroma beneath. The epithelial component can exhibit mild to severe atypia. Invasive carcinomas can develop within these lesions.
Serous cystic neoplasms. • Most benign lesions are found in women and cause abdominal mass symptoms. • The most frequent kind is serous microcystic adenoma, which causes a well-defined pancreatic mass with multiple tiny cysts and a central scar. The small cysts are bordered by cuboidal cells with a spherical nucleus and transparent cytoplasm, indicating glycogen buildup.
Small pseudopapillary neoplasm. • Pancreatic neoplasm with cystic change. • Commonly found in young women with abdominal mass symptoms. Tumors in the pancreas can form a solid mass with cysts and hemorrhage.
Histologically, the tumor is made up of homogeneous spherical cells that form sheets and cables. Pseudopapillary and cystic areas are caused by poorly cohesive cells. Tumors are typically low-grade, with most patients staying tumor-free for years after resection.
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Pathology – Cholecystitis
Cholecystitis is defined as gallbladder inflammation.
Epidemiology: • Very prevalent. Aetiology • The most common cause is gallstones (calculous cholecystitis). • Acalculous cholecystitis is also seen, particularly in the elderly.
Pathogenesis • Chemical harm to the mucosa by bile is thought to be the cause of biliary stasis. • A gallstone or inadequate gallbladder motility might block the gallbladder exit. Biliary colic causes acute upper abdomen pain that disappears spontaneously after several hours. • Acute cholecystitis is a serious condition characterized by persistent upper abdominal pain, fever, and tachycardia. Macroscopy reveals thicker gallbladder walls and potentially friable mucosa. • Gallstones are often present.
Histopathology • Acute cholecystitis is characterized by oedema, inflammatory cells, and granulation tissue. • Chronic cholecystitis is characterized by muscular hypertrophy and fibrous tissue, mild chronic inflammation, and the development of mucosal diverticula that herniate through the muscular layer (Rokitansky-Aschoff sinuses). • Xanthogranulomatous cholecystitis is a type of chronic cholecystitis characterized by the presence of macrophages and fibroblasts, likely due to a ruptured Rokitansky-Aschoff sinus.
Prognosis: Most individuals with calculous cholecystitis can be treated with cholecystectomy.
Cholecystitis is defined as gallbladder inflammation.
Epidemiology: • Very prevalent. Aetiology • The most common cause is gallstones (calculous cholecystitis). • Acalculous cholecystitis is also seen, particularly in the elderly.
Pathogenesis • Chemical harm to the mucosa by bile is thought to be the cause of biliary stasis. • A gallstone or inadequate gallbladder motility might block the gallbladder exit. Biliary colic causes acute upper abdomen pain that disappears spontaneously after several hours. • Acute cholecystitis is a serious condition characterized by persistent upper abdominal pain, fever, and tachycardia. Macroscopy reveals thicker gallbladder walls and potentially friable mucosa. • Gallstones are often present.
Histopathology • Acute cholecystitis is characterized by oedema, inflammatory cells, and granulation tissue. • Chronic cholecystitis is characterized by muscular hypertrophy and fibrous tissue, mild chronic inflammation, and the development of mucosal diverticula that herniate through the muscular layer (Rokitansky-Aschoff sinuses). • Xanthogranulomatous cholecystitis is a type of chronic cholecystitis characterized by the presence of macrophages and fibroblasts, likely due to a ruptured Rokitansky-Aschoff sinus.
Prognosis: Most individuals with calculous cholecystitis can be treated with cholecystectomy.
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P
Pathology - Intrahepatic cholangiocarcinoma
A malignant epithelial neoplasm originating in the liver, consisting of cells that resemble bile ducts.
Epidemiology • Uncommon in the majority of populations.
Aetiology Liver flukes (Clonorchis sinensis and Opisthorchis viverrini). • Hepatolithiasis. • PSC • Exposure to Thorotrast, a contrast agent utilized from 1930 until 1955. • Biliary anomalies.
Carcinogenesis • The most prevalent genetic abnormalities are mutations in RAS and TP53.
Presentation • Many manifest late, as they can attain significant size within the liver prior to eliciting symptoms such as malaise, weight loss, and abdominal pain. Tumors infiltrating the hilar area of the liver may manifest as obstructive jaundice.
Macroscopy • The liver has extensive confluent nodules of gray-white tumor, frequently accompanied by satellite deposits. • The surrounding liver tissue is typically non-cirrhotic. Histopathology: Adenocarcinomas characterized by infiltrating malignant epithelial cells that develop glandular and papillary forms. • A characteristic feature is the presence of profuse fibroblastic stroma.
Prognosis: Generally unfavorable, with 5-year survival rates ranging from 40% to 50%, contingent upon the stage.
Pathology - Intrahepatic cholangiocarcinoma
A malignant epithelial neoplasm originating in the liver, consisting of cells that resemble bile ducts.
Epidemiology • Uncommon in the majority of populations.
Aetiology Liver flukes (Clonorchis sinensis and Opisthorchis viverrini). • Hepatolithiasis. • PSC • Exposure to Thorotrast, a contrast agent utilized from 1930 until 1955. • Biliary anomalies.
Carcinogenesis • The most prevalent genetic abnormalities are mutations in RAS and TP53.
Presentation • Many manifest late, as they can attain significant size within the liver prior to eliciting symptoms such as malaise, weight loss, and abdominal pain. Tumors infiltrating the hilar area of the liver may manifest as obstructive jaundice.
Macroscopy • The liver has extensive confluent nodules of gray-white tumor, frequently accompanied by satellite deposits. • The surrounding liver tissue is typically non-cirrhotic. Histopathology: Adenocarcinomas characterized by infiltrating malignant epithelial cells that develop glandular and papillary forms. • A characteristic feature is the presence of profuse fibroblastic stroma.
Prognosis: Generally unfavorable, with 5-year survival rates ranging from 40% to 50%, contingent upon the stage.
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Pathology - Hereditary hemochromatosis
Definition: An inherited condition marked by heightened intestinal iron absorption, resulting in iron accumulation in several organs, especially the liver, and potentially causing organ damage.
Epidemiology • The genetic incidence of the mutant gene is 0.4% among Caucasian populations, however the clinical penetrance is far lower. • Both males and females are equally affected; however, women typically present later in life due to iron loss associated with menstruation.
Genetics: An autosomal recessive condition resulting from mutations in the HFE gene located on chromosome 6p. • HFE encodes the iron regulating hormone hepcidin. • The most prevalent mutation is a missense mutation at codon 282, resulting in the substitution of a cysteine residue with a tyrosine (C282Y).
Pathogenesis • Hepcidin regulates plasma iron levels by obstructing iron export via ferroportin from duodenal enterocytes and macrophages. • A deficiency in hepcidin leads to elevated plasma iron levels and buildup in several organs, including the liver, pancreas, heart, joints, and pituitary gland
.
Presentation • Initial symptoms are nonspecific and encompass fatigue and arthropathy. • Subsequently, manifestations may include skin pigmentation, cirrhosis, hypogonadism, heart failure, and diabetes mellitus. • If transferrin saturation and serum ferritin levels are elevated, testing for the C282Y mutation should be conducted.
Macroscopy • Advanced instances result in diffuse nodularity attributable to cirrhosis.
Histopathology • The initial histological alteration is the deposition of iron in periportal hepatocytes, as seen by Perl’s stain. As the disease advances, iron accumulates in hepatocytes throughout the liver lobules, accompanied by portal tract enlargement due to fibrosis. • Ultimately, bridging fibrosis ensues, culminating in cirrhosis.
Prognosis: Overall mortality is not elevated in patients who receive prompt diagnosis and appropriate iron depletion therapy. Approximately 5% of men and 1% of women develop cirrhosis. This condition has a poorer prognosis, even with intervention, and poses a substantial risk of hepatocellular carcinoma.
Definition: An inherited condition marked by heightened intestinal iron absorption, resulting in iron accumulation in several organs, especially the liver, and potentially causing organ damage.
Epidemiology • The genetic incidence of the mutant gene is 0.4% among Caucasian populations, however the clinical penetrance is far lower. • Both males and females are equally affected; however, women typically present later in life due to iron loss associated with menstruation.
Genetics: An autosomal recessive condition resulting from mutations in the HFE gene located on chromosome 6p. • HFE encodes the iron regulating hormone hepcidin. • The most prevalent mutation is a missense mutation at codon 282, resulting in the substitution of a cysteine residue with a tyrosine (C282Y).
Pathogenesis • Hepcidin regulates plasma iron levels by obstructing iron export via ferroportin from duodenal enterocytes and macrophages. • A deficiency in hepcidin leads to elevated plasma iron levels and buildup in several organs, including the liver, pancreas, heart, joints, and pituitary gland
.
Presentation • Initial symptoms are nonspecific and encompass fatigue and arthropathy. • Subsequently, manifestations may include skin pigmentation, cirrhosis, hypogonadism, heart failure, and diabetes mellitus. • If transferrin saturation and serum ferritin levels are elevated, testing for the C282Y mutation should be conducted.
Macroscopy • Advanced instances result in diffuse nodularity attributable to cirrhosis.
Histopathology • The initial histological alteration is the deposition of iron in periportal hepatocytes, as seen by Perl’s stain. As the disease advances, iron accumulates in hepatocytes throughout the liver lobules, accompanied by portal tract enlargement due to fibrosis. • Ultimately, bridging fibrosis ensues, culminating in cirrhosis.
Prognosis: Overall mortality is not elevated in patients who receive prompt diagnosis and appropriate iron depletion therapy. Approximately 5% of men and 1% of women develop cirrhosis. This condition has a poorer prognosis, even with intervention, and poses a substantial risk of hepatocellular carcinoma.
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Pathology – Acute Pancreatitis
Acute pancreatitis is defined as acute inflammation of the pancreas and surrounding tissues.
Epidemiology • Uncommon.
Aetiology • Gallstones and alcohol are responsible for the majority of instances. • Other reasons include abdominal trauma, endoscopic retrograde cholangiopancreatography (ERCP), medications, hypercalcemia, pancreatic divisum, and viral infection. • Most cases are idiopathic.
Pathogenesis • Pancreatic injury triggers the release of digestive enzymes, resulting in necrosis of pancreatic and peripancreatic tissues. • Exudation of plasma into the retroperitoneal area causes hypovolemia and cardiovascular instability. • Paralytic ileus can also be caused by severe inflammation near the gut.
Presentation: Sudden onset of severe upper abdominal discomfort spreading to the back, accompanied by nausea, vomiting, and fever. Hypotension may occur, leading to shock.
Biochemistry: A significant increase in serum amylase can indicate acute pancreatitis in the appropriate clinical situation.
Macroscopy reveals an enlarged and squishy pancreas. • Peripancreatic tissues show white flecks of fat necrosis. • Severe instances result in bleeding into the necrotic pancreas.
Histopathology reveals acute inflammation, oedema, and localized necrosis of the pancreas. • There is fat necrosis around the peripancreatic tissue. • Severe cases have extensive necrosis and bleeding within the gland.
Prognosis: • Most instances are moderate and treatable with supportive measures. • Severe cases may require organ support in an intensive care unit. • Infection of necrotic pancreatic tissue can result in disseminated intravascular coagulation and multiple organ failure. • Pancreatic pseudocysts, an accumulation of fluid within the pancreas, are a typical late consequence.
Acute pancreatitis is defined as acute inflammation of the pancreas and surrounding tissues.
Epidemiology • Uncommon.
Aetiology • Gallstones and alcohol are responsible for the majority of instances. • Other reasons include abdominal trauma, endoscopic retrograde cholangiopancreatography (ERCP), medications, hypercalcemia, pancreatic divisum, and viral infection. • Most cases are idiopathic.
Pathogenesis • Pancreatic injury triggers the release of digestive enzymes, resulting in necrosis of pancreatic and peripancreatic tissues. • Exudation of plasma into the retroperitoneal area causes hypovolemia and cardiovascular instability. • Paralytic ileus can also be caused by severe inflammation near the gut.
Presentation: Sudden onset of severe upper abdominal discomfort spreading to the back, accompanied by nausea, vomiting, and fever. Hypotension may occur, leading to shock.
Biochemistry: A significant increase in serum amylase can indicate acute pancreatitis in the appropriate clinical situation.
Macroscopy reveals an enlarged and squishy pancreas. • Peripancreatic tissues show white flecks of fat necrosis. • Severe instances result in bleeding into the necrotic pancreas.
Histopathology reveals acute inflammation, oedema, and localized necrosis of the pancreas. • There is fat necrosis around the peripancreatic tissue. • Severe cases have extensive necrosis and bleeding within the gland.
Prognosis: • Most instances are moderate and treatable with supportive measures. • Severe cases may require organ support in an intensive care unit. • Infection of necrotic pancreatic tissue can result in disseminated intravascular coagulation and multiple organ failure. • Pancreatic pseudocysts, an accumulation of fluid within the pancreas, are a typical late consequence.
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Pathology - Wilson's disease
Definition: An hereditary disease of copper metabolism resulting in the accumulation of toxic copper levels in the liver and brain. Epidemiology: Rare occurrence. • Although most cases manifest during childhood or young adulthood, the diagnosis should be contemplated as a potential etiology of liver disease at any age. • Both males and females are equally impacted. Genetics: An autosomal recessive condition resulting from mutations in the ATP7B gene, which encodes a copper-transporting ATPase. Approximately 100 distinct mutations have been identified, with the majority of individuals exhibiting compound heterozygosity, meaning they possess two separate mutant alleles.
Pathogenesis • The presence of two mutant ATP7B alleles disrupts normal copper transport, resulting in the accumulation of toxic copper levels in hepatocytes and basal ganglia.
Presentation • The majority of individuals exhibit symptoms in childhood or early adulthood, characterized by chronic liver disease or cirrhosis. • A minority of patients exhibit hepatic failure. • Approximately fifty percent of patients thereafter develop neuropsychiatric symptoms resulting from copper accumulation in the brain, typically following the onset of liver illness.
Macroscopy • At the time of presentation, the majority of patients have advanced disease, and the liver is firm due to significant fibrosis or cirrhosis. Histopathology: Liver biopsies reveal a chronic hepatitis pattern characterized by portal inflammation, dispersed lobular inflammation, and varying degrees of fibrosis, contingent upon the disease stage. The diagnosis is strongly indicated by elevated amounts of stainable copper or copper-associated protein in hepatocytes.
Prognosis • The condition is progressive and culminates in cirrhosis if left untreated. • Continuous administration of metal chelating medicines can avert this progression, if the diagnosis is established promptly. The risk of hepatocellular cancer is minimal.
Definition: An hereditary disease of copper metabolism resulting in the accumulation of toxic copper levels in the liver and brain. Epidemiology: Rare occurrence. • Although most cases manifest during childhood or young adulthood, the diagnosis should be contemplated as a potential etiology of liver disease at any age. • Both males and females are equally impacted. Genetics: An autosomal recessive condition resulting from mutations in the ATP7B gene, which encodes a copper-transporting ATPase. Approximately 100 distinct mutations have been identified, with the majority of individuals exhibiting compound heterozygosity, meaning they possess two separate mutant alleles.
Pathogenesis • The presence of two mutant ATP7B alleles disrupts normal copper transport, resulting in the accumulation of toxic copper levels in hepatocytes and basal ganglia.
Presentation • The majority of individuals exhibit symptoms in childhood or early adulthood, characterized by chronic liver disease or cirrhosis. • A minority of patients exhibit hepatic failure. • Approximately fifty percent of patients thereafter develop neuropsychiatric symptoms resulting from copper accumulation in the brain, typically following the onset of liver illness.
Macroscopy • At the time of presentation, the majority of patients have advanced disease, and the liver is firm due to significant fibrosis or cirrhosis. Histopathology: Liver biopsies reveal a chronic hepatitis pattern characterized by portal inflammation, dispersed lobular inflammation, and varying degrees of fibrosis, contingent upon the disease stage. The diagnosis is strongly indicated by elevated amounts of stainable copper or copper-associated protein in hepatocytes.
Prognosis • The condition is progressive and culminates in cirrhosis if left untreated. • Continuous administration of metal chelating medicines can avert this progression, if the diagnosis is established promptly. The risk of hepatocellular cancer is minimal.
