T05.01.6 PREVALENCE AND RISK FACTORS FOR PRENEOPLASTIC AND NEOPLASTIC LESIONS OF THE COLON AND RECTUM IN PATIENTS UNDER 50 REFERRED FOR COLONOSCOPY. (1st October 2020) - Agazzi, S.; Lenti, M.V.; Klersy, C.; Strada, E.; Pozzi, L.; Rovedatti, L.; Costa, S.; Costetti, M.; Bardone, M.; Mauro, A.; De Grazia, F.; Di Sabatino, A.