CTICasesMorgagni Hernia Containing Ascites
Imaging findings
Frontal and lateral chest radiographs show a dense, well-defined mass in the right cardiophrenic angle. Chest CT and sagittal reconstructions reveal an anterior diaphragmatic defect containing herniated omental fat as well as a large amount of loculated ascitic fluid tracking into the thoracic hernia sac from the abdomen.
Key takeaways
Morgagni hernias are congenital anterior diaphragmatic defects that typically contain omentum, fat, or colon. In the presence of significant abdominal ascites, fluid can track into the hernia sac, causing the hernia to appear abnormally dense and mimic a solid mass or pericardial cyst on chest radiographs.
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