Submitted to: Journal of Zoo and Wildlife Medicine
Publication Type: Peer reviewed journal
Publication Acceptance Date: 10/13/2010
Publication Date: 3/1/2011
Citation: Greenlee, J.J., Nieves, M.A., Myers, R.K. 2011. Bronchial carcinoma in a red-shouldered hawk (Buteo lineatus). Journal of Zoo and Wildlife Medicine. 42(1):153-155. Interpretive Summary: Cancer of the respiratory tract is a rarely identified disease condition of wild birds. This report describes a malignant mass of the large lung airways of a Red-Shouldered Hawk. The case description and images included in this case report will be used by veterinary laboratory dianosticians, wildlife veterinarians, and students of veterinary pathology.
Technical Abstract: Neoplasms of respiratory tract are rare in birds. This report describes carcinoma of the bronchial epithelium in a Red Shouldered Hawk (Buteo lineatus). Grossly, the caudal air sac and coelomic cavity contained approximately 15 ml of dark brown cloudy fluid that displaced the intestines cranially. Nodular plaques were present on the viscera and air sacs. The caudal aspect of both lungs were mottled pale to dark. Histologically, the mass expanded the bronchial lumen and was composed of papillary proliferations of rows of small cuboidal epithelial cells that were small and uniform in size with a low mitotic index.