Woman who had agonizing stomach pain and a bloated belly had a twisted colon, or sigmoid volvulus. Doctors had to untwist it and remove part of her colon.

Fight Colorectal Cancer warns that 'any amount ... Bright red blood usually comes from the lowest part of the colon, known as the sigmoid colon, which could be a sign of hemorrhoids.

The sigmoid colon — the part of the large intestine nearest to the rectum — tends to be more “free floating” than other parts of the colon, says Dr. Alyson Cunningham, a colorectal surgeon ...