Spontaneous coronary artery rupture and cardiac tamponade in Ehlers-Danlos syndrome type IV.

Spontaneous coronary artery rupture resulted in cardiac tamponade in a man with Ehlers-Danlos syndrome (type IV) presenting with acute onset of cardiac chest pain. Electrocardiograms suggested acute myocardial infarction. The haemopericardium was drained and angiography showed a ruptured distal branch of the left circumflex coronary artery. The patient remains well.