Inclusion Criteria:  Patients with indication for colonoscopy as part of a screening colonoscopy, after a positive immunological test, and/or for personal or family history of colon cancer (before 60 years and patient had more than 50 years), personal history of colonic adenoma. Patient with at least one polyp detected, resect and removed during colonoscopy, for histological analysis  Exclusion Criteria:  Guardianship or protection, pregnancy, not fluent in French or illiterate, lack of health care