Painful left forearm swelling (Sep, 10.1007/s00256-020-03591-w, 2020)

Anteroposterior and lateralradiographs of the left forearm demonstrate(Fig. 1) expansile subperiosteal lytic bone lesions that extend into the soft tissue, associated with diffuse cortical thinning, subperiosteal scalloped erosion of the radius, and radiating trabeculae with periosteal reaction.