A colonoscopy is a test that doctors perform using a thin, flexible tube called a colonoscope that examines the inner lining of a patient's large intestine. Doctors perform colonoscopies to detect ulcers, polyps and tumo... More »

www.reference.com Health Diagnostics & Imaging

During a colonoscopy, the doctor inserts a colonoscope into the rectum and through the large intestine to view images of the lining of the colon. The colonoscope also discharges air into the colon to make it expand for b... More »

www.reference.com Health Diagnostics & Imaging

During a colonoscopy, the patient is given medicine and the doctor inserts a colonoscope, or a thin tube, into the colon, according to the American Cancer Society. The colonoscope has a small video camera at the end that... More »

www.reference.com Health Diagnostics & Imaging

A colonoscopy is a diagnostic test that allows a physician to examine the inner lining of the rectum and colon for bleeding, polyps, tumors or areas of inflammation, according to WebMD. The test is commonly performed on ... More »

www.reference.com Health Diagnostics & Imaging

A colonoscopy is an exam that gives the physician the ability to observe the large intestine, which includes the rectum and colon. This exam can locate ailments, including colon polyps, bleeding, inflammation, tumors and... More »

www.reference.com Health Diagnostics & Imaging

A colonoscopy is a procedure that allows a physician to examine the inner lining of the large intestine, according to WebMD. Using an instrument called a colonoscope, the doctor examines the rectum and colon for signs of... More »

www.reference.com Health Diagnostics & Imaging

An upper endoscopy involves inserting an endoscope, which is a thin tube with a camera and light at the edge, into the mouth, throat and esophagus, letting the physician examine the esophagus, stomach and small intestine... More »

www.reference.com Health Diagnostics & Imaging