Academisch Medisch Centrum - Universiteit van Amsterdam (AMC-UvA)
The purpose of this study is to determine the efficacy and safety of a personalised surveillance and intervention protocol for patients with familial adenomatous polyposis (FAP) that have undergone (procto)colectomy.
Familial adenomatous polyposis (FAP) is characterized by formation of up to hundreds to thousands of polyps throughout the entire colon and rectum. When left untreated, nearly all patients with FAP develop colorectal cancer at a median age of 35-45 years. To prevent colorectal cancer in patients with FAP, prophylactic colorectal surgery is performed. The preferred surgical procedures for FAP are a restorative proctocolectomy with ileal pouch-anal anastomosis (IPAA) or a subtotal colectomy with ileorectal anastomosis (IRA) or ileosigmoidal anastomosis (ISA). After both types of prophylactic co…
Inclusion Criteria: * Diagnosis of FAP, at least one of following: genetic diagnosis (proven APC germline mutation) and/or clinical diagnosis (\>100 colorectal adenomas in combination with a positive family history of FAP) * Have undergone prophylactic (procto)colectomy with IRA/ISA or IPAA * Age 18 years or older Exclusion Criteria: * Not able to remove all polyps with an indication for removal during (multiple) clearing endoscopies * Cancer at baseline endoscopy * Need for surgery
This study uses one arm. Participants will undergo endoscopic surveillance with intervals between 6 months and 2 years, depending on severity of polyposis and performed endoscopic interventions.
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