Skip to Content
Medical Term:


Pronunciation: nu'mo-me'de-a-sti'num

Definition: Abnormal presence of air in mediastinal tissues; multiple causes include pulmonary interstitial emphysema, ruptured bleb, perforation of the cervical or thoracic esophagus or airways, cervicomediastinal infection, and perforated abdominal viscus.

Synonym(s): mediastinal emphysema

[G. pneuma, air, + mediastinum]

© Copyright 2017 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.