Granulomatous Pneumonia

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Granulomatous mycotic pneumonia (Image sourced from Bristol Biomed Image Archive with permission)
  • Variable number and distribution of caseous or non-caseous granulomas throughout the lung
  • Must be distinguished from neoplasms
  • Calcification may occur
  • Caused by agents resistant to phagocytosis, mostly fungi, Mycobacterium bovis, Rhodococcus equi, foreign material, FIP
  • Micro: centre of necrotic tissue surrounded by macrophages, connective tissue and lymphocytes