title: Carcinoma of the anus in Crohn's disease.
abstract: The incidence of gastrointestinal cancer in patients with Crohn's disease may be slightly increased. We report 2 cases of squamous cell carcinoma of the anus occurring in patients with distal Crohn's disease.
mesh_terms: D000368:Aged; D001005:Anus Neoplasms / Q000209:etiology* / Q000473:pathology; D002294:Carcinoma, Squamous Cell / Q000209:etiology* / Q000473:pathology; D003424:Crohn Disease / Q000150:complications* / Q000473:pathology; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged