Endoscopy of the small bowel.
D000230:Adenocarcinoma / Q000175:diagnosis; D000328:Adult; D002446:Celiac Disease / Q000175:diagnosis; D004379:Duodenal Neoplasms / Q000175:diagnosis; D019723:Endoscopes; D004724:Endoscopy / Q000379:methods; D005260:Female; D005336:Fiber Optic Technology; D006471:Gastrointestinal Hemorrhage / Q000209:etiology; D006391:Hemangioma / Q000175:diagnosis; D006801:Humans; D007410:Intestinal Diseases / Q000175:diagnosis* / Q000000981:diagnostic imaging; D007421:Intestine, Small; D008297:Male; D008875:Middle Aged; D011859:Radiography