Granulomatous pneumonia and hepatitis associated with Providencia rettgeri infection in a crocodile monitor lizard (Varanus salvadorii)

Kycko, Anna and Kozaczyński, Wojciech and Jasik, Agnieszka and Kędrak-Jabłońska, Agnieszka and Borkowska-Opacka, Bogna and Reichert, Michał (2013) Granulomatous pneumonia and hepatitis associated with Providencia rettgeri infection in a crocodile monitor lizard (Varanus salvadorii). Acta Veterinaria Hungarica, 61 (1). pp. 51-58. ISSN 0236-6290

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Abstract

The present report describes a case of granulomatous pneumonia and hepatitis in a male crocodile monitor lizard (Varanus salvadorii). During the necropsy of the monitor lizard, multifocal to coalescing pale yellow lesions were observed in both lung lobes, as well as similar, though milder, changes in the liver, and an ulcerative lesion on the food pad of the right hindlimb. Histopathologically, the presence of multiple necrotising, chronic granulomas containing bacterial clumps were observed in the parenchyma of the lung and the liver. By microbiological examination of the pathologically altered lung tissues, Providencia rettgeri was identified. Altogether, our findings indicate that the bacterial infection resulting in extensive chronic necrotising granulomatous inflammation was the primary cause of the reptile’s death. To our knowledge, this is the first report of Providencia rettgeri-associated granulomatous pneumonia and hepatitis in the monitor lizard.

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