Sigmoidoscopy (SIG-moy-DAH-skuh-pee) enables a clinician to look at the inside of the large intestine from the rectum through the last part of a section of the colon, called the sigmoid colon. Clinicians may use this procedure to find the cause of diarrhea, abdominal pain, or constipation. They also use sigmoidoscopy to look for early signs of cancer in the colon and rectum. With sigmoidoscopy, the clinician can see bleeding, inflammation, abnormal growths, and ulcers.
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