The detection of adenomas is the basis for the follow-up of patients with familial adenomatous polyposis, after colectomy, with a remnant rectum or an ileal pouch. The optimal method for the adenomas detection is not defined yet. Despite the proven effectiveness of indigo-carmine in different indications dye chromoendoscopy is not used in a consensual way at the international level. The situation of the ileal pouch is specific as adenomas have a usually flat shape and are much more difficult to identify than in the situation of a remnant rectum, even in the situation of \> 5 mm adenomas that should be resected. Our hypothesis is that indigo-carmine can improve adenomas detection, including \> 5 mm adenomas, in patients with a an ileal pouch after colectomy improving the effectiveness of surveillance programs and potentially reducing the risk of cancer in this population.
Study Type
OBSERVATIONAL
Enrollment
40
Films performed in white light high definition, NBI and indigo-carmine dye, will be compared blindly to detecte number of adenomas with the different observation methods
Average number of ileal pouch/reservoir adenomas
Average number of ileal pouch/reservoir adenomas detected according to the endoscopic mode (staining or not, virtual or not) based on a paired review of the films with final consensus in case of discordance
Time frame: 6 months after colonoscopy
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