Abstract
Dedifferentiated parosteal osteosarcomas are characterized histologically by the combination of low-grade fibroblastic osteosarcoma admixed with a high-grade component that typically has the appearance of malignant fibrous histiocytoma or osteosarcoma. Herein we report a case of dedifferentiated parosteal osteosarcoma of the distal femur, in which the high-grade component consisted of rhabdomyosarcoma. To our knowledge, a rhabdomyosarcomatous component has not been described previously in a dedifferentiated parosteal osteosarcoma. The clinical, radiologic, and pathologic features of this rare type of surface osteosarcoma are described.
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Received: 1 March 1999 Revision requested: 6 April 1999 Revision received: 27 Apri1 1999 Accepted: 29 April 1999
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Reith, J., Donahue, F. & Hornicek, F. Dedifferentiated parosteal osteosarcoma with rhabdomyosarcomatous differentiation. Skeletal Radiol 28, 527–531 (1999). https://doi.org/10.1007/s002560050557
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DOI: https://doi.org/10.1007/s002560050557