Dr. Neelendu Dey studies whether gut microbes can be harnessed to prevent and treat colon cancer. He factors the latest ...

The recommended age to start screening for colorectal cancer was lowered in 2021 from 50 to 45 for people of average risk.

For a sigmoidoscopy, the area examined is not the entire colon but only the sigmoid colon — the bottom third, where 60% of colon cancers occur. Because a sigmoidoscopy looks only at part of the colon, ...

An intestinal polyp is a growth that sticks out of the lining of the colon or rectum. Risk factors include a family history of polyps or colon cancer.

Doctors use flexible sigmoidoscopy to examine the rectum and the lower part of the colon. Learn what to expect during this procedure.

For example, polyposis involving the transverse colon and sigmoid raises problems of therapy too extensive to be covered here. Pseudopolyps, associated with inflammatory lesions.

Abdominoperineal resection: usually performed for a lower rectal or anal cancer. Involves the surgical removal of the anus, rectum, and sigmoid colon, along with associated lymph nodes, resulting ...

Colon polyp size has many implications for a future diagnosis. Learn what small to large colon polyps mean using charts and visual aids.

Finding out that a polyp you had removed contains cancer raises a lot of questions. Learn what this means in terms of treatment and future risks.