[Neonatal intrapericardial teratoma].
ABSTRACT Neonatal intrapericardial teratoma is a rare cardiac tumor. The prognosis depends on making the diagnosis during the perinatal period. Surgery is usually resolutive with dramatic improvement of signs and symptoms of pericardial compression. We present a case of a female neonate diagnosed by prenatal echocardiography of intrapericardial teratoma at 34 weeks of gestation. Progressive increase of pericardial effusion and additional signs of atrial compression compelled to perform an elective Cesarean section at 38 weeks to be followed by an immediate surgical treatment. Pathology confirmed the diagnosis of mature teratoma. Postoperative course was favourable with radiologic and echocardiographic improvement.