[Aneurysm of the left main coronary artery caused by thoracic trauma].

A 30 years-old female patient, presented with a clinical picture of acute pulmonary edema associated with anterior myocardial necrosis following a car accident with mild blunt chest injury. The coronary angiogram showed the existence of an aneurysm in the left main coronary artery (LMCA) causing extrinsic compression of the artery. Subsequent angiograms showed a complete disappearance of the aneurysm. The patient remains symptom-free three years after the accident. Blunt chest injury is a potential cause of heart damage. Although the coronary arteries may be damaged, the development of an aneurysm has been reported on very few occasions and always in connection with the anterior descending coronary artery. Our case is the first case described with the location of the aneurysm in the left main artery.