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Citation:
Venkatesh M, Carroll D, Weerakkody Y, et al. Fluid color sign. Reference article, Radiopaedia.org (Accessed on 03 Mar 2025) https://doi.org/10.53347/rID-30779
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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1.Wu RG, Yang PC, Kuo SH et-al. "Fluid color" sign: a useful indicator for discrimination between pleural thickening and pleural effusion. J Ultrasound Med. 1995;14 (10): 767-9. J Ultrasound Med (abstract) - Pubmed citation
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