Juvenile DOIVDOSiS Juvenile polyps of the duodenum are rare and nearly always occur in the context of a more widespread gastrointestinal juvenile poly-

Juvenile polyps of the duodenum are rare and nearly always occur in the context of a more widespread gastrointestinal juvenile polyposis. Clinical features and neoplastic risk are less significant, although there is a case report of a duodenal carcinoma occurring in a patient with familial juvenile polyposis. Most of the polyps resemble the more common sporadic juvenile polyp of the colon, being round and smooth-surfaced pedunculated lesions. They consist of cystically dilated, small intestinal-type glands, lined by unremarkable goblet cells, absorptive cells, endocrine cells and Paneth cells. The background is an exuberant, rather inflamed lamina propria, devoid of smooth muscle (7).