Juvenile Polyposis Syndrome is a rare disease and is included in the Hamartomatous Familial Polyposis's (HFP) group. It's an autosomal dominant syndrome which can be determinated by SMAD4/DPC4 germline mutations (which codifies an intermediary mediator of TGF-b). It's characterized by 10 or more hamartomatous polyps (juveniles) throughout the gastrointestinal tract, especially in the colon. The symptoms usually appears between the ages of 4 and 14 years old. Some polyps can acquire adenomatous changes despite the lesion's hamartomatous nature and there's chance of colorectum malignization. Case report of two patients with Juvenile Polyposis coli associated to adenomatous changes with dysplasia and literature review.
Juvenile Polyposis Syndrome; malignization; familiar inheritance
