Pneumomediastinum chest x ray

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Pneumomediastinum Microchapters

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]

Overview

The diagnosis can be confirmed via chest X-ray showing a radiolucent outline around the heart and mediastinum or via CT scanning of the thorax. The presence of air within the connective tissue planes of the mediastinum can be seen on chest X-ray.

Chest X Ray

Radiological findings of pneumomediastinum are following:

Pediatric pneumomediastinum has different appearances:

  • Elevated thymus: thymic wing sign/Spinnaker snail sign(thymus being outlined by air).
  • Gas crossing the superior mediastinum: haystack sign (the heart appears like a haystack in a Monet painting).



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