Coronary aneurysms after a febrile illness: probable mucocutaneous lymph node syndrome.

An autopsy of a probable case of MCLS is described. After 10,000 cases have been recorded in Japan, the disease is being recognized in the United States. There may be an overlap with infantile periarteritis nodosa. Pathologic studies of fatal cases of MCLS diagnosed during life have not been reported in this country. Further studies will be necessary to confirm the high incidence of coronary arteritis and aneurysms in this country.