There is a unique well-circumscribed proximal epiphyseal-metaphyseal lesion with a thin low signal rim, with no associated cortical involvement, periosteal reaction, or soft tissue extension. It is hyperintense on PD FS sequences, hypointense on T1, and enhances avidly after gadolinium injection. It measures 35 x 26 mm on axial images.
There is no hemosiderin deposit on gradient echo images.
An intramedullary T2 hyperintensity surrounds this lesion in keeping with bone oedema.