Eosinophilic endomyocardiopathy.

A young patient with a severely elevated eosinophil count died from manifestations of severe eosinophilic endomyocardiopathy. Echocardiographic and hemodynamic evaluation were diagnostic of a rapidly progressive restrictive cardiomyopathy. Progression of cardiac disease in the face of medical treatment is an ominous sign and may argue for earlier surgical intervention in this syndrome.