apherézis

Apherésis is a type of surgical procedure that involves the removal of a part of a structure. The term originates from the Greek word "aphairesis," meaning "taking away." It is a broad term used in various medical fields, including ophthalmology, dermatology, and general surgery, to describe the excision of diseased or damaged tissue.

In ophthalmology, apherésis may refer to the removal of a portion of the cornea, iris, or conjunctiva. This can be done to treat conditions such as pterygium (a growth on the conjunctiva), corneal scars, or certain types of tumors. The specific technique and extent of removal depend on the condition being treated.

In dermatology, apherésis can describe the removal of skin lesions, such as moles, cysts, or skin cancers. The goal is to excise the abnormal tissue while minimizing scarring and preserving surrounding healthy skin. The removed tissue is often sent for histopathological examination to confirm the diagnosis.

General surgery may also employ apherésis for the removal of diseased or damaged organs or parts thereof. For example, a partial colectomy is a type of apherésis where a section of the colon is removed. The term emphasizes the act of removing a portion, rather than the complete ablation of an entire organ. The decision to perform apherésis is based on a careful evaluation of the patient's condition and the potential benefits and risks of the procedure. Post-operative care and recovery are crucial aspects of the apherésis process.