What are histologic findings characteristic of nosocomial pneumonia?

Updated: Apr 15, 2021
  • Author: Kartika Shetty, MD, FACP; Chief Editor: John L Brusch, MD, FACP  more...
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Answer

Answer

Histologic study of lung tissue reveals either necrotizing or nonnecrotizing pneumonia, depending on the pathogen. P aeruginosa produces a necrotizing pneumonia with vessel invasion, local hemorrhage, and microabscess formation. [9] Other aerobic gram-negative bacilli produce a polymorphonuclear response at the site of invasion, but microabscess formation and vessel invasion are absent.


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