25/06/2015
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Ovine
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Granulomatous pneumonia in a lamb
Histopathology showed multiple nodular necrotizing-granulomatous lesions partially mineralized and with the typical concentric arrangement of caseous lymphadenitis (caused by C.pseudotuberculosis , as evidenced by the positive result in the Gram stain).
However microbiological culture yielded solely a pure culture of Pasteruella multocida . It might be a coinfection, but the granulomatous lesions described are not typical of Pasteurella .