Occurrence and pathology of pneumonia in camels
2006
Bhardwaj, B. | Sharma, G.D. | Singh, S. (Surendra) | Dadhich, R.
In the present study, 157 samples of camel lungs were collected and out of these 4 had fibrinous pneumonia and 32 had interstitial pneumonia. Grossly, consolidated dark red to reddish black or black areas were seen. Microscopically, the alveolar lumen was filled with fibrinocellular exudates with strands of fibrin passing from alveolus to alveolus through pores of Kohn. Fibrin was less copious as compared to its cellular or serous component. Organization of exudates from alveolar septa, peribronchial and perivascular area was observed leading to cornification in a few cases. There was drift of alveolar exudates into bronchioles in the form of tubes lined with intact epithelium. Microscopic lesions in acute phase of interstitial pneumonia were characterized by congested alveolar vessels with or without serous exudates in the alveolar lumen and hyaline membrane lining air spaces. Foetalization of lungs was seen in most of the cases. Perivascular and peribronchiolar lymphocytic infiltration and lymphoid hyperplastic changes were found in many cases leading to partial or complete obliteration of bronchiolar lumen in some cases. In viral type of interstitial pheumonia, characteristic thickening of alveolar walls due to infiltration of macrophages and lymphocytes was found. Cases showing alveolar lumina with large number of giant cells of varied form and size were designated as giant cell pheumonia. In chronic interstitial pneumonia, proliferation of peribronchial and perivascular connective tissue along with mononuclear leucocytic infiltration was found.
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