Prenatal Ultrasound Diagnosis of a Rare Morgagni Hernia: A Case Report

This case report presents a rare instance of fetal Morgagni hernia. A 27-week pregnant woman was found to have a fetal Morgagni hernia during a routine prenatal examination. The condition likely resulted from a congenital defect in the diaphragm, characterized by failure of the retrosternal portion to close, leading to communication between the pericardial and peritoneal cavities. A portion of the liver herniated through this defect into the retrosternal region, compressing the pericardium and causing massive pericardial effusion, along with lung compression and subsequent pulmonary hypoplasia.