A, Anteroposterior radiograph of left humerus of 75-year-old woman who complained of left arm pain. Examination revealed lesion to be primary lymphoma of bone. B, After stabilization with intramedullary nail. C, Left humerus 2 months after surgery demonstrating local progression as patient had refused all other treatment. D, Left humerus after treatment with chemotherapy and radiation demonstrating consolidation of bone.