the following tumor types are discussed on the basis of cases from our collection ( numbers in brackets ) : `` '' conventional '' '' highly malignant osteosarcoma ( 32 ) , parosteal and periosteal osteosarcoma ( 2 ) , telangiectatic osteosarcoma ( 2 ) , small cell osteosarcoma ( 1 ) , small cell sclerosing osteosarcoma ( 2 ) , histiocytic osteosarcoma ( 1 ) , ewing 's sarcoma ( 15 ) , `` '' conventional '' '' chondrosarcoma ( 7 ) , dedifferentiated chondrosarcoma ( 2 ) , mesenchymal chondrosarcoma ( 1 ) , giant cell tumor ( 12 ) , malignant fibrous histiocytoma of bone ( 5 ) , fibrosarcoma of bone ( 3 ) , the results of conventional light and electron microscopy , but also of enzyme histochemistry and autoradiography were included in the definitive classification by both histologic and cytologic criteria .
C2981607
tumor types
C1335473
`` '' conventio