<prompt> Which of the following colonic polyps is not premalignantJuvenile polypsHamaomatous polyps associated with peutz jeghers syndromeVillous adenomaTubular adenomas  <response>: .Juvenile Polyps Commonest polyp of colorectum in infants and children. Can cause intussusception, prolapse through rectum, bleeding. Colonoscopic polypectomy is done. Not a pre-malignant condition. ref:SRB;s manual of surgery ,ed 3,pg no 831 