Authors:Anna Kycko, Wojciech Kozaczyński, Agnieszka Jasik, Agnieszka Kędrak-Jabłońska, Bogna Borkowska-Opacka, and Michał Reichert
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.
Authors:Teresa Karpińska, Wojciech Kozaczyński, Krzysztof Niemczuk, Agnieszka Jasik, Anna Kycko, and Michał Reichert
An outbreak of fowlpox occurred in a commercial laying hen flock in one of the western provinces of Poland. Clinical signs suggested fowlpox and the diagnosis was confirmed by histopathological detection of Bollinger bodies within the epithelial cells. Detailed ultrastructural examination revealed an additional concurrent infection with chlamydia-like particles. The particles were identified by PCR as fowlpox virus and Chlamydophila psittaci. It is worth noting that both pathogens can generate morphologic forms capable of prolonged survival and inducing latent and persistent infection. We suggest a possible interaction between the two pathogens on ultrastructural level and assess the clinical consequences of the mixed infection. This study also demonstrates a potential of the transmission electron microscope (TEM) for identifying a superinfection with another pathogen (in this case C. psittaci), which may remain undetected by routine techniques.