CTICasesDiaphragmatic eventration
Imaging findings
Chest radiograph and CT show a large bulging elevation of the right hemidiaphragm causing displacement of abdominal viscera superiorly and mediastinal shift to the left. The elevated hemidiaphragm demonstrates a steep descent to normal height posteriorly on lateral views and preserved muscle thickness without atrophy on CT.
Key takeaways
Diaphragmatic eventration is a congenital anomaly where a portion of the diaphragm is replaced by thin fibrous tissue. It is distinguished from diaphragmatic paralysis on lateral views by a steep descent of the posterior diaphragm toward a normal height, and on CT by the preservation of muscle thickness at the transition points.
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