Choroid plexus papillomas of the cerebellopontine angle in a child.

An 11-year-old girl was admitted with a 3-year history of decreasing hearing, and headache, occasional vomiting and poor school performance of 8 months duration. Neurologically she showed signs of a cerebellopontine angle mass. This was confirmed by CT scan, which showed an enhancing lesion in the right cerebellopontine angle. The lesion was totally removed, with excellent results. Histologically the tumor appeared to be a choroid plexus papilloma. Choroid plexus papillomas of the cerebellopontine angle are extremely rare in children.