Cardiac neurilemoma. Report of a case with electron microscopic examination.

A cardiac neurilemoma was found at autopsy in a 70-year-old man. The patient had an adenocarcinoma of the lung with metastases to hilar lymph nodes and various organs. Light microscopic examination showed a small nodule of metastatic adenocarcinoma in the cardiac neurilemoma. Electron microscopic examination confirmed the Schwann's cell origin of the cardiac tumor. To our knowledge, this is the fifth reported case of cardiac neurilemoma.