A flexible sigmoidoscopy is a diagnostic procedure performed to examine the sigmoid, the lower and last end of the colon, also known as the descending colon. The rectum and sigmoid colon are parts of the gastrointestinal tract. The rectum is approximately six inches long and is located between the sigmoid colon and the anus. A flexible sigmoidoscopy procedure is often used to determine the cause of changes in bowel activity, abdominal pain, rectal bleeding and to investigate other gastrointestinal symptoms.
During a flexible sigmoidoscopy, images of the rectum and sigmoid colon are displayed on a screen for the doctor to examine and detect any abnormalities. This procedure can also detect early signs of cancer. A flexible sigmoidoscopy may be recommended for individuals age 50 and older, who are at risk of d