[Juxtacortical osteosarcoma (author's transl)].

Juxtacortical osteosarcoma should be considered a very rate distinctive entity under all malignant bone tumors. The tumor has a remarkable tendency to grow from the periostal tissues peripherally with a usually marked degree of ossification without primary medullary involvement. It's different und characteristic behavior in clinical, roentgenographic and microscopic findings from that of other types of bone-forming sarkomas is discussed by means of a just treated case. In contrast to osteogenic osteosarcoma the prognosis for early well treated juxtacortical osteosarcoma is much better.