Ortho Dx: Femur pain in a woman with lung cancer

A 63-year-old woman with a history of stage-4 non-small-cell lung cancer presents to the emergency department with increasing pain in her right femur. The pain started 3 months ago and is present with activities and at rest. The patient denies any known injury or precipitating event. A recent computed tomography (CT) scan shows metastatic disease to ...