<prompt> Which of the following colonic polyps has no risk far malignancyJuvenile polypsHamaomatous polyps associated with Peutzjeghers syndromeJuvenile polyposis syndromeFamilial adenomatous polyposis syndrome  <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. PEUTZ-JEGHERS POLYP is common in small intestine jejunum Features are multiple, familial, hamaomatous intestinal polyps. Asssociated with melaenosis of the oral mucosa, lips lower lip and occasionally digits not in tongue. Microscopically it contains tree like branching filaments of mucosa with smooth muscle wall. It can occasionally turn into malignancy FAMILIAL ADENOMATOUS POLYP FAP It is inherited as an autosomal dominant neoplastic condition chromosome no. 5 It is familial with a high potential for malignant transformation. ref:SRB;s manual of surgery,ed 3,pg no 834 