Which histologic findings are characteristic of viral pneumonia?

Updated: Mar 24, 2021
  • Author: Zab Mosenifar, MD, FACP, FCCP; Chief Editor: John J Oppenheimer, MD  more...
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Answer

In general, when viruses cause pneumonia, it initially affects the parenchyma adjacent to terminal and respiratory bronchioles and subsequently progresses to involve the entire lobule. With rapidly progressive pneumonia, diffuse alveolar damage is seen, consisting of intra-alveolar hemorrhage, interstitial lymphocyte infiltration, edema, fibrin deposition, type 2 pneumocyte hyperplasia, and formation of hyaline membranes. [75]


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