CTICasesDiaphragmatic Eventration
Imaging findings
Chest radiograph shows severe, marked elevation of the right hemidiaphragm. Chest CT and reformatted images demonstrate that the muscular diaphragm is extremely thin and membranous at its dome, with relative sparing/hypertrophy of the anterior and posterior attachments, without diaphragmatic crus atrophy.
Key takeaways
Diaphragmatic eventration is a congenital developmental defect characterized by focal muscle thinning and replacement with fibrous tissue, leading to elevation of the abdominal contents. It is clinically and radiologically distinguished from diaphragmatic paralysis on CT by the absence of diaphragmatic crus atrophy, though both can present similarly and be treated with surgical plication.
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