INDICATION: ,  Rectal bleeding, constipation, abnormal CT scan, rule out inflammatory bowel disease.,PREMEDICATION: ,See procedure nurse NCS form.,PROCEDURE:  ,gastroenterology, bleeding, ct scan, digital rectal exam, pentax video, rectal, cecal strap, cecum, colonic mucosa, colonoscope, colonoscopy, constipation, hemorrhoids, ileocecal valve, inflammatory bowel disease, lateral position, bowel disease, internal hemorrhoids, inflammatory