Case report 788: Mesenchymal chondrosarcoma of the soft tissue of the left foot.

A patient with mesenchymal chondrosarcoma involving both bone and soft tissues of the foot has been presented. The clinical and radiological criteria for this lesion have been described and the pathological features considered. It is noted that the pathological data in this case are markedly similar to the classical cases described in the literature. Most patients afflicted with this tumor are women and the average patient age is about half that for classical chondrosarcoma. Soft tissues are very commonly involved. The pathological diagnosis is not easy because hemangiopericytoma-like cellular patterns are commonly encountered. The prognosis is poor and it is believed that surgical resection is the best means of treatment to attempt control.