[Prevalence of the microscopic colitis to the course of the chronic diarrhea: about 150 cases]

The goal of our survey is to value the microscopic colitis frequency at 150 patients, colliged on a period of 6 years [1997-2003], that have a chronic diarrhea with a normal total coloscopy and that benefitted of systematic biopsies. The microscopic colitis has been recovered at 44 patients on 150 either 29,3%. 16 of our patients [37%] are put on Salazopyrine, they answered well to the treatment with a receding of 3 years. The microscopic colitis is a pathology whose frequency seems under valued, it is certainly benign but can give a frequent diarrhea requiring a curative treatment