How is atelectasis differentiated from a massive pleural effusion?

Updated: Oct 22, 2020
  • Author: Tarun Madappa, MD, MPH; Chief Editor: Nader Kamangar, MD, FACP, FCCP, FCCM  more...
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A massive pleural effusion may cause dyspnea, cyanosis, and weakness. On physical examination, there is typically dullness to precussion and absent breath sounds of the involved hemithorax. The heart and mediastinum may be deviated away from the involved area.

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