Abstract
We report a case of a 32-year-old woman who presented with parosteal osteosarcoma of the distal femur with simultaneous dedifferentiation to a high-grade osteoclast-rich osteogenic sarcoma. This pattern of dedifferentiation is rare, particularly at the time of presentation. We are aware of three other somewhat comparable cases in the literature; however, none is quite similar to our case.
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Shuhaibar, H., Friedman, L. Dedifferentiated parosteal osteosarcoma with high-grade osteoclast-rich osteogenic sarcoma at presentation. Skeletal Radiol 27, 574–577 (1998). https://doi.org/10.1007/s002560050440
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DOI: https://doi.org/10.1007/s002560050440