Type III Kounis syndrome after administration of an echocardiography contrast agent.

A dobutamine stress echocardiogram was performed in a 72-year-old woman to assess an intermediate lesion in the left anterior descending artery. After administration of the echocardiography contrast agent, she presented with an anaphylactic reaction and in that context a subacute thrombosis of a drug-eluting stent implanted 15 days before. This is a case of the so-called type III Kounis syndrome.