The patient is 50 years old and has no family history of colon cancer. Should he have a repeated colonoscopy at 1 year? 5 years? 10 years?
A 50-year-old man undergoes a screening colonoscopy. He has no family history of colon cancer. A 10-mm flat polyp is removed from the ascending colon and pathology demonstrates a sessile serrated adenoma.
You recommend that he have a repeated colonoscopy in: