An examination of the rectum and lower portion of the large intestine is done during a sigmoidoscopy. The lower portion of the large intestine is referred to as the sigmoid colon in medicine. The rectum marks the end of the sigmoid colon. When you have a bowel movement, waste that has accumulated in your rectum leaves your body. A sigmoidoscopy is one method of checking for growths or colorectal cancer. This includes tiny tumors known as polyps. However, polyps have the potential to develop into cancer. This examination may also be used to determine the root of gastrointestinal issues. These might involve a change in bowel habits, bleeding, or other issues. In this experiment, a light and camera are mounted on one end of a thin, flexible tube. This end is put in the anus by your doctor. The lower colon is then reached by gradually pushing it up through the rectum. Through a tiny scope on the tube or a video monitor, they can view what's happening inside the colon.
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