Pancolitis is a form of Ulcerative Colitis that is very severe. Pan refers to the fact that the isease is spread throughout the large intestine. This is from the Cecum to the Rectum of the individual. Symptoms are very similar to those of any Ulcerative Colitis patient except more severe in nature. Additionally, people with pancolitis have a much greater risk of developing Colon Cancer. This is especially true when a patient has this chronic form of the disease for a great length of time, i.e. ten years and more.