Sigmoidoscopy (Anoscopy, Proctoscopy)

These tests are done to:

• Detect problems or diseases of the anus, rectum, or lower large intestine (sigmoid colon). These tests are often done to investigate symptoms such as unexplained bleeding from the rectum, long-lasting diarrhea or constipation, blood or pus in the stool, or lower abdominal pain.
• Remove polyps or hemorrhoids.
• Monitor the growth of polyps or the treatment of inflammatory bowel disease.
• Screen for colon cancer or polyps.