A case of Ollier's disease associated with two intracerebral low-grade gliomas.

Ollier's disease, or multiple enchondromatosis, is a deforming dysplastic disease of cartilage, characterized by multiple, asymmetrically distributed intra-osseous cartilaginous masses in the metaphyses and diaphyses of bones. When associated with soft tissue hemangiomas it is referred to as Maffucci's syndrome, in which the enchondromatosis has no unilateral distribution. The emergence of malignant neoplasms, including gliomas, is a well-recognized complication in Maffucci's syndrome. We report a 28-year-old patient with a history of Ollier's disease, who developed two low-grade cerebral gliomas as well as an intracranial chondroma. This case history questions the distinction between the two forms of enchondromatosis and supports a continuum between these disease entities.