The Journal of Bone and Joint Surgery

Image Quiz
A Neoplasm of the Arm
Harish S. Hosalkar, MD, Alfred Atanda Jr, BSc, Julieta E. Barroeta, MD, Christian M. Ogilvie, MD, and Richard D. Lackman, MD*, Department of Orthopaedic Surgery, University of Pennsylvania (H.S.H., A.A., C.M.O., and R.D.L.), and Department of Pathology, The Pennsylvania Hospital (J.E.B.), Philadelphia, Pennsylvania. E-mail address for R.D. Lackman: rilack@pahosp.com
Fig. 1	A sixty-nine-year-old woman was referred because of the acute onset of severe pain in the right shoulder and arm after sustaining a minor injury. The patient had had ongoing discomfort in this region for about three months prior to this episode. Because the pain at presentation was so severe, the initial plain radiographic examination was limited to a single posteroanterior view (Fig. 1).