Acute febrile mucocutaneous lymph node syndrome with multiple aneurysms: report of a case.

A 4-month-old male infant with acute febrile mucocutaneous lymph-node syndrome developed mitral regurgitation, pericardial effusion and multiple pulsating masses in the upper and lower extremities. Two-dimensional echocardiography demonstrated aneurysms in both coronary arteries. Arteriography of the right arm demonstrated multiple aneurysms. Seventeen months later, arteriography and two-dimensional echocardiography demonstrated regression of the aneurysms. This case provides evidence that regression of aneurysms can occur in mucocutaneous lymph node syndrome.