Abnormal mucosal fold patterns in the duodenum.
D003937:Diagnosis, Differential; D004378:Duodenal Diseases / Q000000981:diagnostic imaging*; D004379:Duodenal Neoplasms / Q000000981:diagnostic imaging; D006801:Humans; D007413:Intestinal Mucosa / Q000000981:diagnostic imaging*; D011859:Radiography