
Ulcerative colitis is categorized according to location: ⢠Proctitis involves only the rectum.⢠Proctosigmoiditis affects the rectum and sigmoid colon.⢠Left-sided colitis encompasses the entire left side of the large intestine.⢠Pancolitis inflames the entire colon.
Review Date: 12/22/2010
Reviewed By: Harvey Simon, MD, Editor-in-Chief, Associate Professor of Medicine,
Harvard Medical School; Physician, Massachusetts General Hospital.

