Colonoscopy
A colonoscopy is a test that allows a specialist to look at the inner lining of your large intestine (rectum and colon). The procedure helps find ulcers, colon polyps, tumors and areas of inflammation or bleeding.
A thin, flexible tube with a small video camera - called a colonoscope - is used to take pictures or videos. During a colonoscopy, the doctor may remove tissue and/or polyps for further examination and possibly treat any problems that are discovered.
This outpatient exam is often used to screen for colon cancer or to evaluate symptoms such as abdominal pain, change in bowel habits or unexplained weight loss, among other symptoms. It can be completed in less than an hour and is performed under mild sedation to relieve any discomfort.
Colonoscopy can also be used to treat certain diseases, including removal of polyps, widening narrowed areas or blockages, or addressing bleeding from diverticula or lesions. Specialized procedures, such as laser surgery or cauterizing techniques, may also be performed during a colonoscopy.