Chronic hypersensitivity pneumonitis with usual interstitial pneumonia pattern. a) At low magnification, bronchiolar damage with bridging fibrosis between.

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Presentation transcript:

Chronic hypersensitivity pneumonitis with usual interstitial pneumonia pattern. a) At low magnification, bronchiolar damage with bridging fibrosis between bronchiole and pleura are the clues suggesting chronic hypersensitivity pneumonitis (haematoxylin and ... Chronic hypersensitivity pneumonitis with usual interstitial pneumonia pattern. a) At low magnification, bronchiolar damage with bridging fibrosis between bronchiole and pleura are the clues suggesting chronic hypersensitivity pneumonitis (haematoxylin and eosin stain, 20×). b) At higher magnification, a few inconspicuous interstitial granulomas, consisting of isolated giant cells with cholesterol clefts, can be observed (haematoxylin and eosin stain, 200×). Wim A. Wuyts et al. Eur Respir Rev 2014;23:308-319 ©2014 by European Respiratory Society