[Introduction to x-ray diagnosis of primary malignant bone tumor (author's transl)].

Diagnosis of primary malignant bone tumors is based on a synopsis of X-ray findings, clinical symptoms, gross pathology and histology. Osteosarcoma, chondrosarcoma, fibrosarcoma and myelogenic sarcomas have a typical symptomatology and can be diagnosed in the radiograph by localisation, mode of extension, alterations of bone and periosteum.