Pleural effusion: The ‘Spine sign’

Spine sign: visualization of the vertebral bodies in the thoracic cavity above the diaphragm – indicative of pleural effusion.

In the absence of pleural effusion, the spine is obscured by air in the lung, and is cut off at the diaphragm. Because fluid is a good transmitter of sound waves, spine is seen when there is fluid around the lung.

1 Comment

  1. Pingback: Mirror image artefact | NephroPOCUS

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