[Clinico-morphological characteristics of bone chondrosarcomas].

One hundred and sixty-two cases of bone chondrosarcoma (86 males and 76 females) were studied. Course development of secondary neoplasms was more favorable than that of primary ones. Tumor size was found to be in correlation with 3-year survival only. No significant correlation was established between tumor size, on the one hand, and 5- and 10-year survival rates, on the other. Histologic type of chondrosarcoma proved to be of the highest prognostic value. The tumor followed 5 patterns: chondrosarcoma with mild (I), moderate (II), and severe (III) anaplasia, mesenchymal chondrosarcoma and the so-called "dedifferentiated" chondrosarcoma.