Anomalous origin of the left coronary artery from pulmonary artery misdiagnosed as postpartum cardiomyopathy.

A 30-year-old woman with a history of presumed postpartum cardiomyopathy presented to her primary care physician's office with crescendo angina and shortness of breath. She was found to be in supraventricular tachycardia, managed with the Valsalva maneuver, and was discharged home without any further workup. She again presented with exertional symptoms.