Colonoscopy is the gold standard for colorectal cancer prevention by allowing the resection of superficial colorectal adenomas or adenocarcinomas. This protection, more effective in the left colon than in the right colon, is imperfect and there are some adenomas and cancers omitted during colonoscopy. The G-EYE colonoscope equipped with an integrated distal balloon would better unfold the haustrations and stabilize the endoscope. Thus, the detection rate of adenomas would be improved by this better vision. The main objective of this study is to confirm that the use of the G-EYE colonoscope allows better detection of adenomatous polyps, decrease the rate of omitted adenomes and then is more effective.

Inclusion Criteria:

1. Indication of complete colonoscopy for classic indications (bleeding, abdominal pain, transit disorders) or for family and personal antecedents of adenomas or colorectal cancers with the need for endoscopic control,
2. FIT + test (current blood test for stool used for mass screening in France), PET-CT fixation,
3. Consent of participation signed,
4. Affiliation to a social security scheme, or beneficiary of such a scheme.

Exclusion Criteria:

1. Non-optimal preparation (boston score <7 or segment <2),
2. Adenomatous polyposis, familial or assimilated (juvenile, etc.),
3. Pregnant or likely to be pregnant (without effective contraception) or breastfeeding,
4. Patient in emergency or deprived of liberty or placed under the authority of a tutor,
5. Patient considered geographically socially or psychologically unable to comply with the study procedure and the medical follow-up.