Duodenal pseudopolyp--the flexure fallacy.
D003937:Diagnosis, Differential; D004379:Duodenal Neoplasms / Q000000981:diagnostic imaging*; D004724:Endoscopy; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007413:Intestinal Mucosa / Q000000981:diagnostic imaging*; D007417:Intestinal Polyps / Q000000981:diagnostic imaging*; D008297:Male; D011859:Radiography