The proximal diametaphysis of the right fibula shows a well-defined slightly expansile multiloculated lesion measuring about 11x1.5x1.5 cm in its maximal orthogonal dimensions. No cortical breakthrough, periosteal reaction, extra-osseous components or intra-articular extension.
The lesion elicits low T1 and high T2/STIR signals. A small area of marrow edema of low T1 and high T2/STIR signals is seen in the fibular shaft related to the lower part of the lesion. No appreciable post-contrast enhancement.