title: Four cases of neoplasia in captive wild birds.
abstract: Four cases of malignant neoplasia in captive wild birds are described: an adenocarcinoma of the adrenal gland in a Mountain duck (Tadorna tadornoides), a malignant melanoma in the thoracic cavity of a Combed duck (Sarkidiornis melanotos), a hepatocellular carcinoma with pulmonary metastasis in an Asian Purple Swamphen (Porphyrio porphyrio), and an undifferentiated carcinoma in the abdomen with metastasis to skeletal muscle in a White-Breasted Waterhen (Amaurornis phoenicurus). The tumors were diagnosed during a 1-year period and represented an incidence of neoplasia of 3.1%. These appear to be the first documented cases of a malignant adrenal gland tumor and a non-ocular melanoma in the order Anseriformes. The hepatocellular carcinoma failed to react with an immunoperoxidase stain for alphafetoprotein.
mesh_terms: D000818:Animals; D000835:Animals, Wild; D000836:Animals, Zoo; D001715:Bird Diseases / Q000473:pathology*; D001717:Birds; D004372:Ducks; D005260:Female; D009369:Neoplasms / Q000473:pathology / Q000662:veterinary*