title: Necrotizing amebic colitis with pseudomembrane formation.
abstract: We report a case of necrotizing amebic colitis with the sigmoidoscopic finding of a confluent, grayish pseudomembrane. The patient was referred from a chronic mental institution, which represents the patient population most susceptible to fulminant amebic dysentery in the United States. The pseudomembrane was a reflection of extensive mucosal necrosis and resolved with amebicidal therapy.
mesh_terms: D003106:Colon / Q000473:pathology*; D004404:Dysentery, Amebic / Q000188:drug therapy / Q000473:pathology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D009092:Mucous Membrane / Q000473:pathology; D009336:Necrosis; D012812:Sigmoidoscopy