A 67-year-old man with history of tobacco smoking presents to the emergency department with sudden onset, retrosternal chest pain radiating to the neck and associated with diaphoresis and nausea. On examination, his blood pressure was 106/42?mm Hg, pulse of 73 beat/min. He was pale, diaphoretic with IV/VI diastolic blowing murmur of unknown chronicity heard at the left sternal border. His distal pulses were faint but symmetric in all extremities. No marfanoid features.