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EN
The study presents three cases of renal carcinoma in budgerigars. Clinical examination revealed moderate enlargement of the abdominal wall, polyuria and a typical symptom of right or left leg paresis with decreased sensation but no bone or muscle abnormalities. Histological examinations revealed renal cell carcinoma in all three cases: in the right kidney (two budgerigars) and the left kidney (one budgerigar). Additionally, in one case multiple metastases in the liver were found. Immunohistochemical examination indicated cytokeratin expression in the kidney as well as in the liver metastases, confirming epithelial origin of that neoplasia.
EN
The aim of this study was to determine the prevalence of Macrorhabdus ornithogaster (formerly Megabacteria sp.) in exotic and wild birds in Poland. A total of 399 birds of 45 species were examined for M. ornithogaster, using fecal smears (live birds) or cytological samples of the proventriculus undertaken at necropsy (the birds having died from various causes). M. ornithogaster was detected in 28.7% of exotic birds and 26.1% of wild birds. The microorganism was diagnosed most frequently in budgerigars (65.0%). A high rate of colonization was shown in macaws (41.6%), African gray parrots (33.3%), nymphs (26.9%) and lovebirds (16.7%). The prevalence of M. ornithogaster in canaries was 9.3%, in finches (Chloebia gouldiae, Poephila acuticauda, Amadina fasciata) 1.2%. In conclusion, the occurrence of M. ornitogaster in exotic birds is common in Poland, but in most of the cases the presence of this microorganism was not correlated with any clinical signs.
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