What causes hyperlucency on chest radiographs for non-small cell lung cancer (NSCLC)?

Updated: Aug 27, 2019
  • Author: Sat Sharma, MD, FRCPC; Chief Editor: Eugene C Lin, MD  more...
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An endobronchial lesion reduces the ventilation despite normal or increased air volume. As a result, hypoxic vasoconstriction reduces perfusion, and attenuation is seen as hyperlucency on chest radiography. In partially atelectatic areas of the lung, hyperlucency rather than opacity may be evident.

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