Published in:
Open Access
01-12-2013 | Case report
A popliteal giant synovial osteochondroma mimicking a parosteal osteosarcoma
Authors:
Andreas Toepfer, Florian Pohlig, Heinrich Mühlhofer, Florian Lenze, Rüdiger von Eisenhart-Rothe, Ulrich Lenze
Published in:
World Journal of Surgical Oncology
|
Issue 1/2013
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Abstract
Both giant synovial osteochondroma and parosteal osteosarcoma are rare musculo-skeletal tumors, often localized in the vicinity of the knee. Misdiagnosis of a malignant bone tumor can entail fatal consequences. Etiology of giant synovial osteochondroma is widely unsolved but is believed to originate from synovial chondromatosis, a mostly benign metaplasia of the synovial membrane. Parosteal osteosarcoma is a low-grade surface osteosarcoma with a propensity of local recurrence and the potential of distant metastasis and therefore requiring a different therapeutical approach. We report the case of a popliteal giant osteochondroma mimicking a parosteal osteosarcoma. Relevant facts of this rare entity regarding pathogenesis, treatment, and differential diagnoses will be discussed.