Progressive Dyspnea and Pleural Effusion—When the Answer Lies Buried in the History

A 65-year-old Caucasian male with past medical history of prostate cancer status post prostatectomy presented to his primary care provider's office with 1 month of progressive cough, dyspnea upon exertion, and fatigue. The patient was training for a marathon and had noticed a progressive decline in his exercise function and endurance. He is a lifetime...