Verminous Pneumonia

Parasitic pneumonia (Image sourced from Bristol Biomed Image Archive with permission)

• Lesions in the lung may be due to:
  • Parasites passing through the lung as part of their migration e.g. Ascaris suum in the pig, aberrant migration in the case of flukes;
  • Parasites for which the lung is the target tissue e.g. Dictyocaulus viviparus
• Lesions can vary from interstitial to chronic bronchitis to granulomatous pneumonia
• May be infiltrate of eosinophils in pulmonary interstitium and bronchoalveolar spaces
• Atelectasis and emphysema may result due to obstruction