Multiple adenomas in juvenile polyposis.

Juvenile polyps are generally considered to have no malignant potential. We report a 16-year old patients with juvenile polyposis coli who presented with diarrhea and hypoproteinemia. Some of her polyps had adenomatous histologic features and a large villoglandular polyp was present in the cecum. The usual nonoperative management of patients with juvenile polyposis may not be appropriate when the polyps show mixed histology. These patients are at risk to develop malignancy although the magnitude of risk is uncertain.