title: Air sac adenocarcinoma of the sternum in a Quaker parrot (Myiopsitta monachus).
abstract: Respiratory neoplasia is rarely reported in avian species. A 17-yr-old Quaker parrot (Myiopsitta monachus) was admitted with a 2-wk history of anorexia, depression, and respiratory distress. Clinical examination revealed a large, firm mass in the left pectoral muscle. Radiology showed a mass silhouetting the heart and the liver. Supportive treatment was provided, but the bird died during the seventh weekly visit to drain thoracic cavity fluid. Necropsy showed a white, 3 x 3 x 2-cm, hard, gritty sternal mass. Histology showed a nonencapsulated, moderately differentiated air sac carcinoma of the sternum. Immunohistochemically the neoplasm was cytokeratin positive and vimentin and calretinin negative. This is the first report of an air sac neoplasia in a Quaker parrot and one of few respiratory tumors in psittacines.
authors: Panayiotis
authors: P
authors: Loukopoulos
authors: Julius Boniface
authors: JB
authors: Okuni
authors: Teresa
authors: T
authors: Micco
authors: Jorge P
authors: JP
authors: Garcia
authors: Francisco A
authors: FA
authors: Uzal
authors: Santiago S
authors: SS
authors: Diab
mesh_terms: D000230:Adenocarcinoma / Q000175:diagnosis / Q000473:pathology / Q000662:veterinary*; D000400:Air Sacs / Q000473:pathology*; D000818:Animals; D001715:Bird Diseases / Q000175:diagnosis* / Q000473:pathology; D017809:Fatal Outcome; D005260:Female; D010311:Parrots; D012142:Respiratory Tract Neoplasms / Q000473:pathology / Q000662:veterinary*; D013249:Sternum / Q000473:pathology*