Eventration and Paralysis of the Diaphragm

 Eventration: Diaphragmatic contour is eccentric, with upward bulging of affected portion of diaphragm 

– Usually anteromedial aspect of right hemidiaphragm


image Paralysis: Asymmetric elevation of involved hemidiaphragm with basal atelectasis


• US
image Sonography superior to fluoroscopy for diaphragmatic abnormalities

image Diaphragmatic paralysis: No motion or paradoxical motion during inspiration

image Eventration seen best during inspiration

• Chest fluoroscopy
image Paralysis: Movement of affected hemidiaphragm is paradoxical (upward during inspiration or sniff test)
– Mediastinum shifts away from paralyzed side during inspiration

– Much less sensitive for bilateral paralysis

image Eventration: Paradoxical motion may or may not be present depending on size of eventration

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Nov 16, 2016 | Posted by in GASTROINTESTINAL IMAGING | Comments Off on Eventration and Paralysis of the Diaphragm

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