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By Joseph Sisti, BS; Joseph Waller, MD; Maria Laura Gregorio, MD; and Min Chul Shin, MD

History
A 66-year-old man presented to the emergency department following a syncopal episode. The initial chest X-ray revealed a widened mediastinum but was otherwise unremarkable. A CT angiography (CTA) of the chest was ordered, and cardiology was consulted. Continue reading »