Monitoring involves the provision of outpatient colonoscopy, and occasionally upper gastric tract esophagogastroduodenoscopy (EGD, to search for premalignant gastric or duodenal tumors[REF]), typically once every 1-5 years, and/or a genetic blood test to definitively confirm or deny susceptibility.
Rectum involved: the rectum and part or all of the colon are removed.