Inferior acute myocardial infarction due to acute cardiac herniation after right pneumonectomy.

A 69-year-old man underwent right intrapericardial pneumonectomy for lung cancer. After 24 h, he went into shock with inferior acute myocardial infarction. We performed urgent coronary angiography, which revealed total occlusion of the mid-right coronary artery. Intravascular ultrasound showed that the artery seemed to be compressed from the pericardial side. We implanted a coronary stent because the lesion was refractory to balloon dilatation. After the procedure, we performed computed tomography and cardiac herniation was diagnosed. Emergency thoracotomy was performed to return the herniated heart to its normal position. This patient was discharged 38 days after initial surgery.