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sigmoid colon




Also known as the pelvic colon, the S-shaped part of the colon in the lower abdomen which extends from the brim of the pelvis, usually down to the third segment of the sacrum (the triangular bone in the lower spine). The sigmoid colon is connected to the descending colon above and the rectum below.


Related entry

   • sigmoidoscopy


Related category

   • ANATOMY AND PHYSIOLOGY