Mucosal biopsy of the colon by retrograde intubation--results and applications.
D001706:Biopsy; D003108:Colonic Diseases / Q000000981:diagnostic imaging / Q000473:pathology*; D006801:Humans; D007413:Intestinal Mucosa / Q000473:pathology*; D007441:Intubation, Gastrointestinal; D011859:Radiography; D012812:Sigmoidoscopy