A 62-year-old man with no significant medical history presented with 1-week history of right shoulder pain. There was no history of trauma. A shoulder radiograph series revealed a mass in the right lung apex. He denied any recent history of fevers, chills, weight loss, or hemoptysis. He had a temperature of 99.1°F, BP of 131/77 mm Hg, pulse of 88 beats/min, respiratory rate of 20 breaths/min, and pulse oximetric saturation of 98% on room air. The findings of a physical examination were unremarkable, except for slightly decreased air entry on the right upper lung fields anteriorly. He had slight pain on shoulder abduction, adduction, and internal rotation. There was no tenderness over the acromioclavicular joint.