Osteochondroma of the proximal fibula
Painless swelling behind the left knee. No history of trauma
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A bony projection of 12mm base width and 15mm length originating from the fibula neck extending towards the popliteal fossa. Covered with a 3mm cartilage cap. After IV contrast; a slight enhancement, secondary to compression, was observed in adjacent soft tissue.
Surgical removal is indicated if the tumor causes pain or functional incapacity, either due to neurovascular compression or due to limitation of joint movement. Sarcomatous transformation is generally treated by means of wide surgical resection while following rigorous oncological criteria.
- Unni K.K. 5th ed. Thomas; Springfield: 1996. Osteochondroma. Dahlin's bone tumors: general aspects and data on 11,087 cases; pp. 11–23
- Shah Z.K., Peh W.C., Wong Y., Shek T.W., Davies A.M. Sarcomatous transformation in diaphyseal aclasis. Australas Radiol. 2007;51(2):110–119