Rare anorectal pathologic conditions.

Abstract

Among the rare anorectal pathologic conditions published in the literature since 1992, except for malignant pathology, we have taken an interest in anal dermatology with Hailey-Hailey disease; infectious diseases, including tuberculosis, gangrene, actinomycosis, and cytomegalovirus ulcerations; vascular pathology with rectal varices and tumoral pathology with leiomyomas and lipomas; embryologic disorders, including gastric and salivary heterotopia; and a few exceptional lesions, such as spontaneous hematomas and certain traumatic lesions.