soystud said...
what percentage of proctitis moves on up the colon - or, how often do things progress into something more involved ?
If ulcerative colitis is initially limited to the rectum at the time of diagnosis (proctitis), fewer than 30% of individuals will go on to develop more extensive disease (Rowe). Approximately 10% of patients presenting with proctitis will develop a pancolitis (Rowe). The disease remains confined to the rectum in approximately 25% of all uc cases (Rowe).
Rowe, William A. "Inflammatory Bowel Disease." eMedicine. Eds. Rajeev Vasudeva, et al. 28 Apr. 2008. Medscape. 29 Sep. 2009 <http://emedicine.medscape.com/article/179037-overview>.