Regional ileitis or carcinoma.
D002288:Adenocarcinoma, Mucinous / Q000175:diagnosis*; D002430:Cecal Neoplasms / Q000175:diagnosis*; D003424:Crohn Disease / Q000175:diagnosis*; D003937:Diagnosis, Differential; D006801:Humans; D008297:Male; D008875:Middle Aged