Intracavernous chondrosarcoma associated with Ollier's disease.

Multiple enchondromatosis (Oilier's disease)' is a rare, non-hereditary condition of unknown aetiology in which cartilaginous masses are found in bones. We report a patient with Oilier's disease who presented with a parasellar syndrome due to a chondrosarcoma in the cavernous sinus. The association of Ollier's disease and intracranial cartilaginous tumours (chondrosarcoma or chondroma) is recognised but very rare.