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Osteoblastoma : Radiographic Features

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On plain films, osteoblastomas usually appear as expansile lytic lesions with a sclerotic rim. The location of tumor in this case is the upper end of fibula. There is a hint of internal calcification. Some cases show an associated soft tissue mass. Secondary aneurysmal bone cyst changes are seen in about 20% of cases. Case produced with permission, courtesy of Dr. Frank Gaillard. Radiopaedia. Complete case is here.

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