This is a case of neonatal tuberous sclerosis associated with cardiac rhabdomyoma and manifested by fetal cardiac arrhythmia-bradycardia. The prenatal echocardiography showed multiple cardiac tumors which occupied the left and right ventricles. The largest one measured 5.2 cm in diameter. It was found to be 4.5 x 4.1 x 3.5 cm in size at autopsy. A postnatal cranial echogram showed multiple subependymal nodules. The patient expired after 7 hours of life. The autopsy findings confirmed the diagnosis. The mother of the patient had adenoma seb'aceum on the face and an ungual fibroma on the left little finger. Cranial computerized tomography revealed a small calcified tubercle.