Treatment-associated polyposis (TAP) should be considered in patients who develop many colon polyps after treatment for a childhood or young adulthood cancer but do not have an identified mutation in a hereditary cancer gene.
A recent study reported that 35% of patients with TAP developed over 50 colorectal polyps, and 94% had multiple types of polyps, including adenomas, serrated polyps, hyperplastic polyps, and hamartomas.
Check out the full article at https://cancerpreventionresearch.aacrjournals.org/content/early/2020/02/09/1940-6207.CAPR-19-0416