Polyprev: Study to Compare Fecal Immunochemical Test With Endoscopic Surveillance After Advanced Adenoma Resection in Fecal Immunochemical Test Colorectal Cancer Screening Programs.

"Patients will be offered an annual FIT and colonoscopy will be performed if fecal hemoglobin concentration is ≥10µg / g of feces. After performing a colonoscopy the FIT will be sent to the patient:~* After one year if the unscheduled colonoscopy has been incomplete or a lesion requiring endoscopic surveillance has been completely resected.~* After five years if the colonoscopy has evaluated the entire mucosa, it is normal or with lesions that do not require endoscopic surveillance (1-2 non-advanced adenomas)."

First surveillance colonoscopy will be performed in three-year time. If an advanced adenoma or at least three non-advanced adenomas are detected, colonoscopy will be repeated after 3 years. In contrast, if colonoscopy is normal or 1-2 non-advanced adenomas are detected, colonoscopy will be repeated after 5 years.