Posterior Mediastinal Mass in a Patient with Chest Pain

A 63-year-old man was admitted to the hospital with a chief complaint of chest pain and palpitations. He had been in his usual state of health until the evening prior to hospital admission, when he experienced the onset of substernal chest pain, which he described as crushing and constant, radiating to his left shoulder. The pain lasted several hours before resolving spontaneously. He came to the emergency department and was admitted to the...