AXILLARY CYSTADENOCARCINOMA IN A MOLUCCAN COCKATOO (CACATUA-MOLUCCENSIS)

An adult Moluccan cockatoo (Cacatua moluccensis) was diagnosed with a cystadenocarcinoma in the right axillary region that was treated sympt omatically with surgical debulking and periodic drainage. The bird eve ntually died and a necropsy was performed. The neoplasm extended throu gh the humerus, and small neoplastic foci were seen within the ipsilat eral lung parenchyma. Rare groupings of microvilli were observed linin g intercellular canalicular lumens on electron microscopy within the a xillary tumor. These findings suggest a respiratory neoplasm, although the tissue of origin remained undetermined.