[Nasal chondroma associated with Ollier's disease. Apropos of a case observed at the Gustave-Roussy Institute].

A patient with a nasal chondroma and Ollier's disease treated at the Institut Gustave-Roussy, Villejuif, had a long past medical history of over 10 years, starting with a nasal lesion diagnosed as a myxoma. Follow up clinical and radiologic examinations failed to detect recurrences. The discovery, ten years after excision of tumor, of multiple skeletal enchondromas raised the hypothesis of Ollier's disease, this being responsible for the myxoid chondroma of the nasal cavities. A past medical history of surgery to the left lower limb presenting a valgus deformity, and of a left suborbital angioma treated by curietherapy confirmed the diagnosis of Ollier's disease and suggested that of a Maffuci syndrome. Prognosis of the disease is dominated by the risk of onset of chondrosarcoma.