What imaging studies are performed in the workup of sarcoidosis?

Updated: Sep 15, 2020
  • Author: Nader Kamangar, MD, FACP, FCCP, FCCM; Chief Editor: Zab Mosenifar, MD, FACP, FCCP  more...
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Imaging studies for sarcoidosis are as follows:

  • Chest radiography: Central to the evaluation

  • Routine chest computed tomography (CT): Adds little to radiography

  • High-resolution CT (HRCT) scanning of the chest: May be helpful; identifies active alveolitis versus fibrosis, and findings correlate with biopsy yield

  • Gallium scans: Used infrequently; has low sensitivity and specificity, but may be helpful when the clinical picture remains confusing despite histologic evidence of noncaseating granulomas (eg, differentiating chronic hypersensitivity pneumonitis from sarcoidosis)

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