<prompt> Which of the following colonic polyps has no risk for malignancy -Juvenile polypsHamartomatous polyps associated with Peutz- Jeghers syndromeJuvenile polyposis syndromeFamillial adenomatous polyposis syndrome  <response>: Ans. is a i.e. Juvenile Polyps Repeat from Nov 09Hamartomatous polyps juvenile polyp is also a hamartomatous polyp by definition do not have malignant potential. They are characterized by overgrowth of normal components of colon, such as epithelium and connective tissue.These hamartomatous polyps are seen in following syndromes - Familial juvenile polyposis, Cronkhite - Canada and Peutz-Jeghers syndromes.Unlike solitary juvenile hamartomatous polyps, polyps associated with Familial juvenile polyposis and Peutz Jeghers syndrome may degenerate into adenomas and eventually into carcinomas. There is increased risk of gastrointestinal as well as extra gastrointestinal malignancies in the syndromes. 