Surgery - Sebaceous Cysts
Introduction 
cyst made of debris and bordered with epithelium that develops from a clogged hair follicle. Known more accurately as an epidermal cyst.

Etiology 
The pilosebaceous gland is occluded. More common in the syndrome of Gardner.

Epidemiology 
incredibly prevalent at any age.

​History 
Slow-growing, non-tender skin swelling that is frequently numerous. may turn red, heated, and sensitive in the event of an infection or inflammation.

Examination 
Smooth, tethered bump on the skin with a punctum covering it.
Usually found on physical parts that bear hair, such as the scrotum, trunk, and scalp.
may exhibit a grainy, creamy substance that smells bad.

Pathogenesis 
These cysts are not derived from sebaceous glands, despite their name. The cystic growth of epidermal cells in the dermis leads to sebaceous cysts. The infundibulum of the hair follicle is frequently the source of this epidermis.

Investigations
Usually none is necessary. FNA or excision biopsy are infrequently required.

Management 
Conservative: Shouldn't be upsetting the patient, may be left alone.

Surgical: Local anesthesia may be used during the cyst excision procedure. The cyst may return if care is not taken to guarantee total eradication. It needs to be drained if an abscess forms in conjunction with it.
Medical: Antibiotics may be administered if there is an infection; nevertheless, once the acute inflammation has subsided, excision is the only effective course of treatment.

Complications 
creation of an abscess, infection. Return if the removal is not complete. may occasionally develop ulcers and seem like a skin cancer (Cock's unusual tumor). If the discharged fluids dry out and create a protrusion in the shape of a horn, a sebaceous horn may arise.

Prognosis 
Excellent; excision is usually curative and the majority don't need treatment.