Angiodysplasia of the colon.
D001165:Arteriovenous Malformations / Q000473:pathology*; D002196:Capillaries / Q000473:pathology; D003106:Colon / Q000098:blood supply*; D003937:Diagnosis, Differential; D006471:Gastrointestinal Hemorrhage / Q000473:pathology; D006801:Humans; D014680:Veins / Q000473:pathology