Intrapericardial teratoma excision in a preterm infant following in-utero pericardiocentesis

We present a multidisciplinary treatment approach for a preterm case of a giant intrapericardial teratoma accompanied by significant pericardial effusion, who was managed in prenatal and neonatal period. Identical twin sibling of the patient was healthy. The infant required in-utero pericardiocentesis for signs of tamponade before delivery by cesarean section. The preterm infant had surgical removal of the tumor during cardiac surgery on the second day of the life. The pathological examination was reported as an immature teratoma. The patient was uneventful postoperatively.