Severe ostial stenosis of the left coronary artery in a 12-year-old girl as the first manifestation of Takayasu's arteritis.

We report the case of a 12-year-old girl who presented with isolated chest pain on minimal exertion over the last 2 months. A coronary angiography revealed severe narrowing of the left coronary artery ostium and increased thickness of the ascending aortic wall was demonstrated by transoesophageal echocardiography, suggesting the diagnosis ofTakayasu's arteritis. The patient was successfully treated with corticosteroids and coronary artery bypass graft surgery.