The examination colonoscopy, also known as an endoscopy is an examination of the lining of the large bowel (colon) to establish whether there is any disease present. This test also allows us to take tissue samples (biopsy) for analysis if necessary.

The instrument used is called a colonoscope (endoscope); a flexible tube about the thickness of your index finger. The colonoscope has a light and a camera on the end. The camera sends out pictures of the lining of your large bowel to a screen where the consultant is able to look at them.