Pulmonary neoplastic lesions in European bison (Bison bonasus)

Abstract

Tumors were very rarely observed in European bison from Białowieża Primeval Forest, and pulmonary neoplasm was not described yet. Post mortem examination of 75 animals of both sexes, from 3 months to 27 years old from the free-living bison at Bałowiez˙a Primeval Forest was carried out. The suspected samples of the lungs were collected for histopathological examination. The routine histopathological examination (H-E) revealed in 4 cases neoplastic lesions.  PAS, Grimelius – histochemical and immunohistochemical method – cytoceratin, vimentin and chromograninA antibodies were used to recognize a type of neoplasm. In one case (female two years old), it was the Bronchogenic large-cell carcinoma. In three cases (two females 4 and 8 years old; male 3 years old) observed was the Bronchioloalveolar adenoma.