Ectatic etiology most likely for bowel bleeds in the aged.
D000368:Aged; D000792:Angiography; D001165:Arteriovenous Malformations / Q000150:complications* / Q000000981:diagnostic imaging; D003106:Colon / Q000098:blood supply* / Q000000981:diagnostic imaging; D005260:Female; D006471:Gastrointestinal Hemorrhage / Q000000981:diagnostic imaging / Q000209:etiology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D012008:Recurrence