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 ) .
C0006826
malignant neoplasia
C0025202
thoracic cavity