A Flexible Sigmoidoscopy is a test which allows the Endoscopist to look directly at the lining of the left side of the large bowel (colon).

A long flexible tube about the width of your finger is inserted into the back passage (anus). The tube is passed around the left side of the colon and pictures are displayed on a television screen allowing the Endoscopist to detect any abnormal areas. The test takes approximately 15 minutes to complete but can take a little less and in some cases longer than this. You should expect to be in the unit approximately 2-4 hours. During a flexible sigmoidoscopy the endoscopist may need to take biopsies and/or remove polyps if its safe to do so.

In order to undergo a flexible sigmoidoscopy the left side of the bowel needs to be cleaned. This may involve you having an enema prior to the procedure, which can be given at home or on the unit or to drink a strong laxative the day before which completely clears out your bowel. The pre-assessment nurse will inform you which preparation you will be having for your procedure.

Biopsy – tissue samples may be taken and sent to the laboratory for analysis. You will not usually feel any pain when this is done.

Polypectomy – polyps (abnormal growths) can also be removed during flexible sigmoidoscopy and sent for analysis. You will not usually feel pain when this is done.

Endoscopic Mucosal Resection (EMR) may be used to remove larger polyps. EMR does increase the risk of perforation but is still considered to be a safe procedure.

You may have been referred by your hospital consultant or GP to investigate symptoms including, change of bowel habit, bleeding or monitoring of pre-existing condition such as polyps.