Juvenile and Peutz-Jeghers polyps.
D000293:Adolescent; D000328:Adult; D002648:Child; D002675:Child, Preschool; D003110:Colonic Neoplasms / Q000209:etiology / Q000473:pathology*; D006222:Hamartoma / Q000209:etiology; D006801:Humans; D007223:Infant; D007417:Intestinal Polyps / Q000209:etiology / Q000473:pathology*; D009378:Neoplasms, Multiple Primary / Q000209:etiology; D010580:Peutz-Jeghers Syndrome / Q000209:etiology / Q000473:pathology*; D012004:Rectal Neoplasms / Q000209:etiology / Q000473:pathology*