Fluid color sign

The fluid color sign is a diagnostic sign to differentiate a pleural effusion from pleural thickening by means of color Doppler ultrasound. In the case of pleural effusion a color signal is seen in the pleural fluid during respiratory and cardiac movement, whereas this color signal is not seen in the case of pleural thickening.

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Article information

rID: 30779
System: Chest
Section: Signs
Synonyms or Alternate Spellings:
  • Fluid color sign

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