Inverted papilloma of the urinary bladder in children: case report and review of prognostic significance and biological potential behavior.

Inverted papilloma of the urinary bladder is rare in the pediatric population. Despite several reports in the literature the prognostic significance and biological potential behavior of this lesion remain uncertain. The authors report a case of polypoid inverted papilloma of the urinary bladder in an 11-year-old boy and review its pathology. The pediatric population with this lesion is an ideal group to provide intense, long-term follow-up to define the biological behavior and prognosis significance of this lesion.