This is a flexible telescopic procedure that allows us to look at the lining of the bowel by passing a flexible telescope. Some air is put into the bowel during the examination to allow the doctor to see . The lower bowel is examined either by flexible sigmoidoscopy – to examine the left side of the colon (large bowel) or a colonoscopy to look all the way around to the right side (caecum). Prior to the investigation you will need to take a laxative or an enema to empty the bowel. In sedation and a painkiller is usually given for  colonoscopy and may be given for a sigmoidoscopy if preferred. If an abnormality is found samples (biopsies) can be taken at the time. Most polyps can also be removed at the time of the procedure. All of Exeter Specialist Clinics endoscopists are accredited by the Joint advisory group (JAG) on gastrointestinal endoscopy.