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Sigmoid - Definition


Sigmoid is an adjective used to describe something in the form of an "S". We can therefore refer to the sigmoid colon, sometimes just called the sigmoid, when describing the last section of the large intestine or colon, located between the descending colon and the rectum. All diseases affecting the colon can impact on the sigmoid colon, and it can be prey to chronic inflammatory disease of the intestine, such as Crohn's disease or ulcerative colitis, or even acute colitis. The sigmoid colon is the most commonly affected section of the colon by inflammation of the diverticula, small pouches that develop on the colonic wall. This condition is often referred to as acute diverticular sigmoiditis, manifesting as pain in the left hypochondrium, the lower, left section of the abdomen, with associated fever.