Difference between revisions of "Interstitial Pneumonia"
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+ | ====[[Acute Bovine Pulmonary Emphysema and Oedema]]==== | ||
====[[Paraquat Poisoning]]==== | ====[[Paraquat Poisoning]]==== |
Revision as of 18:11, 19 February 2011
- Lung inflammation that occurs primarily in alveolar walls rather than in alveolar spaces
- Can be widely distributed but is often most severe in caudal lung lobes
- Diffuse or patchy damage to alveolar septa, may be acute or chronic
- Lesions in most cases result from blood-borne insult and are more likely to involve the dorsocaudal regions, although the damage is often diffuse
- No concentrated inflammatory response in the airway, only secondary to damage of alveolar walls
- As part of systemic infection
- Canine distemper (in alveolar macrophages as inclusions)
- Salmonellosis
- Toxoplasmosis (in alveolar wall)
- Acute interstitial pneumonia is characterised by exudation into the alveolar lumen and in cattle is associated with interstitial emphysema
Examples:
Acute Bovine Pulmonary Emphysema and Oedema
Paraquat Poisoning
Diffuse alveolitis
- Chronic disease of adult cattle occuring sporadically
- Probably caused by repeated subclinical incidents of fog fever or farmer's lung
- Farmer's Lung
- Extrinsic allergic alveolitis
- Hypersensitivity of ingested or inhaled moulds
- May occur as an outbreak or sporadically in adult cattle
- Hypersensitivity diseases often cause an lymphocytic interstitial pneumonia
- Chronic interstitial pneumonia progresses to fibrosis
- Sometimes called pneumonitis