Ulcerative colitis is one type of a condition called inflammatory bowel disease (IBD). New Zealand has the third highest rate of inflammatory bowel disease in the world with the number increasing at an alarming rate. It is estimated to affect 15,000 New Zealanders. Find out more with Intus.

A sigmoidoscopy is an examination of the rectum and the lower end of the large bowel by means of a flexible tube (endoscope). It is the same as a colonoscopy except that it does not examine all of the colon.