CTICasesDiaphragmatic eventration
Imaging findings
Chest radiograph and CT show focal elevation of the anterior portion of the right hemidiaphragm with normal muscle thickness posteriorly and no cross atrophy. Fluoroscopic sniff test confirms paradoxical elevation of the anterior diaphragm and normal downward excursion posteriorly.
Key takeaways
Diaphragmatic eventration is a congenital developmental anomaly characterized by thinning of a portion of the diaphragm. On fluoroscopy, it shows paradoxical upward motion of the thinned anterior portion during sniffs (eventration) with preserved normal downward excursion of the muscular posterior portion.
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