A popliteal giant synovial osteochondroma mimicking a parosteal osteosarcoma

作者：Toepfer Andreas^*; Pohlig Florian; Muehlhofer Heinrich; Lenze Florian; von Eisenhart Rothe Ruediger; Lenze Ulrich

来源：World Journal of Surgical Oncology, 2013, 11(1): 241.

DOI：10.1186/1477-7819-11-241

• Giant synovial osteochondroma
• Chondromatosis
• Bone tumor
• Synovial metaplasia
• Parosteal osteosarcoma

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.

• 出版日期2013-9-25