What are the histologic characteristics of interstitial pneumonia?

Updated: Sep 30, 2020
  • Author: Justina Gamache, MD; Chief Editor: Guy W Soo Hoo, MD, MPH  more...
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The typical lung inflammatory response to the atypical bacteria results in an interstitial picture. Alveolar septa become widened and edematous and usually have a mononuclear inflammatory infiltrate of lymphocytes, histiocytes, and plasma cells. Neutrophils may also be present in acute cases. Pleuritis may result if the underlying inflammation extends to the pleural surface of the lung.

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