Intracranial mesenchymal chondrosarcoma.

A patient with an intracranial mesenchymal chondrosarcoma that simulated an arteriovenous malformation angiographically is described. The tumor was removed radically with a fatal outcome due to progressive, hemorrhagic swelling of the brain. The factors that could have been responsible for this outcome are analyzed. Other reported cases of intracranial mesenchymal chondrosarcomas are summarized and three additional cases from our institution are added. Salient pathological and clinical features of these tumors are discussed.