Jellyfish sign (ultrasound)

Dr David Carroll et al.

The jellyfish sign refers to the sonographic appearance of atelectatic lung "swimming" within a large pleural effusion. The mobility of the lung within pleural fluid implies an absence of lung consolidation and the absence of pleural adhesions 1. It is also suggestive of a transudative pleural effusion, as the viscosity of more exudative effusions may hamper free lung excursion 2.

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Article information

rID: 66858
System: Chest
Section: Signs
Tag: lung, pocus
Synonyms or Alternate Spellings:

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Cases and figures

  • Case 1: sonographic pleural effusion
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