combining form denoting the sigmoid colon. Example: sigmoidotomy (incision into).
Examination of the RECTUM and sigmoid COLON (see also INTESTINE) with an endoscopic viewing device called a sigmoidoscope (see also ENDOSCOPE). The procedure is done to investigate rectal bleeding or persistent diarrhoea, with the aim of detecting or excluding cancer of the rectum and COLITIS. Sigmoidoscopy, which nowadays is performed with a ?exible instrument, can usually be performed on an outpatient basis.... sigmoidoscopy
The S-shaped part of the colon, in the lower abdomen, extending from the brim of the pelvis, usually down to the 3rd segment of the sacrum. It is connected to the descending colon above, and the rectum below.... sigmoid colon
(sigmoidectomy) surgical removal of the sigmoid colon using either an open approach (see laparotomy) or *laparoscopy. It is performed for tumours, severe *diverticular disease, or for an abnormally long sigmoid colon that has become twisted (see volvulus).... sigmoid colectomy
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