[Polycentric studies of idiopathic ulcerous rectocolitis and Crohn's disease of the colon]

An attempt is made to synthesize the experience of leading Italian Endoscopy Centres that concern themselves with problems of the colon. On the basis of a simple questionnaire, the series of 8 Endoscopy Centres have been collected. These number 6012 coloscopic examinations, 465 cases of Idiopathic Ulcerative Colitis and 149 cases of Crohn's Disease of the colon.