Chondromatosis of the choroid plexus: case report.

We report the case of a patient with successful total removal of a previously undescribed intracranial tumor arising in the right lateral ventricle (probably of metaplastic origin). The histopathological examination revealed benign chondromatosis of the choroid plexus. The pathogenesis of this lesion, with special reference to synovial chondromatosis and to the differential diagnosis of solid neoplastic chondromas, their clinical features, and computed tomographic and magnetic resonance imaging findings, is presented and discussed.