People with<unk>  polyps may require yearly upper and lower endoscopies with polyp excision and cytology. Their siblings may also need to be screened regularly.
Juvenile polyposis syndrome
Familial adenomatous polyposis
Serrated polyposis syndrome
Hereditary diffuse gastric cancer
Hereditary nonpolyposis colorectal cancer
MUTYH-associated polyposis
Peutz–Jeghers syndrome
Ogden syndrome