Dear Dr. Johnson: Why do the kits for home testing of blood in the stool recommend taking so many different samples? Bleeding from tumors or polyps in the colon (large intestine) can be intermittent.

A single examination of the lower colon and rectum using sigmoidoscopy, between the ages of 55 and 64 years, reduced colorectal cancer mortality by 43% in those screened and incidence by one third.

A sigmoidoscopy is a procedure that lets your doctor look inside your sigmoid colon. Similar to a colonoscopy, it uses a flexible tube, a small camera, and a light and helps diagnose conditions like ...

About 10% of patients with new rectal bleeding have colorectal neoplasia, based on a prospective study of 265 patients older than 45 years who reported new rectal bleeding at a rural general practice ...

Q: Which doctor should I visit to get flexible sigmoidoscopy done? A: You should visit a gastroenterologist to get a flexible sigmoidoscopy done. Sometimes, general practitioners may also do the ...