Examination of the lower colon using a sigmoidoscope, inserted into the rectum. A sigmoidoscope is a thin, tube-like instrument with a light and a lens for viewing. It may also have a tool to remove tissue to be checked under a microscope for signs of disease. Also called proctosigmoidoscopy.
Tests to Detect Colorectal Cancer and PolypsEx??menes para detectar el c??ncer colorrectal y los p??lipos