Nervous about getting a colonoscopy? A gastroenterologist answers six common questions about prep, the procedure, and what to expect.

A colonoscopy is a telescopic and visual examination of the colon and rectum. It helps doctors detect abnormalities in the bowel, including signs of colorectal cancer, polyps, unexplained diarrhea, ...

Colonoscopy procedure A colonoscopy is an important procedure for detecting colorectal cancer in those at high risk or over the age of 50. A colonoscopy usually takes 30–60 minutes. However, people ...

A colonoscopy is considered the gold standard when it comes to screening for colon polyps and colorectal cancer. Yet a colonoscopy – and the steps required to get one – can cause a spike of anxiety.

Medically reviewed byJimmy Almond, M.D. Colonoscopy is the most widely used screening test for colon cancer, which is the second leading cause of cancer-related death in the United States. It is ...