A 52-year-old man with a history of heavy smoking (34 packs per year) complained of a 1-month history of episodic chest pain. The episodes occurred once every night while resting and lasted for 15 minutes and resolved without intervention. Examination Troponin I test, ECG, and echocardiography was normal, Cardiac catheterization was performed.
What is likely diagnosis? *This case is from Docplexus editorial team for educative purpose only. Source: NEJM Stay connected, the answer will be posted in the next 48h!
