Figure 1

Imaging of the patients right forearm tumor. (A) Initial magnetic resonance imaging (MRI) demonstrating extensive involvement of the soft tissue between the radius and ulna as well as the cortex of the radius by an exclusively solid tumor mass (arrows). (B) Pre-treatment computer tomography (CT) scan with a small area of a split and disrupted cortex of the radius (arrows). (C) MRI directly prior to denosumab therapy with a locally progressive, extensive soft tissue mass following local surgical therapy 18 months previously. Fluid-fluid levels may be seen at this point (arrow). (D) CT scan following five months of denosumab therapy demonstrating almost complete containment of the soft tissue mass by a boney rim (arrow).