Diagnosis and management of fetal intrapericardial Morgagni diaphragmatic hernia with massive pericardial effussion.

Herniation of the liver into the fluid-filled pericardial sac resulting in a thoracic mass is a particularly rare form of Morgagni hernia (congenital diaphragmatic hernia of Morgagni). We report an early antenatal diagnosis of congenital diaphragmatic hernia of Morgagni with pericardium effussion at 21 weeks' gestation. Two pericardiocentesis were performed at 21 and 22 4/7 weeks' gestation because of recurrence of pericardial effussion. Regular ultrasound assessments showed progressive herniation of the liver to practically fill the right hemithorax. An ex utero intrapartum treatment procedure was performed at 37 weeks' gestation to rescue maximum intrathoracic space for ventilation of the remaining functional lung tissue and to establish an airway for postnatal support. After birth, the patient successfully underwent early correction of the hernia. Postoperative course was uneventful, and the newborn girl was discharged 18 days later without complications and is currently doing well.