[Clear-celled chondrosarcoma or chondroblastic sarcoma. A new type of chondrosarcoma (author's transl)]

The authors report five cases treated by wide resection. Pathological studies were made of the whole of the lesion. Three tumours were situated at the upper end of the femur, one at the upper end of the humerus and one at the level of the tibial plateau. The specific features were localisation in an epiphysis and histological areas of clear cells whose cytoplasm contained glycogen. From the anatomical and radiological points of view, these tumours were like chondroblastomata but their progress was more like that of chondrosarcomata. The author concludes that they should be distinguished from both types of tumour.