A primary bronchioloalveolar carcinoma with renal and hepatic metastases was diagnosed in a mature male degu (Octodon degus) that was found dead in a zoological exhibit (Buffalo Zoological Gardens, Buffalo, New York, USA). Grossly, a discrete 0.5 cm diameter nodule was seen in the lung. Smaller, but similar nodules were present scattered in the liver and kidneys. Histologically, nests and sheets of an infiltrating population of cuboidal to low columnar neoplastic epithelial cells partially effaced pulmonary architecture. Vascular invasion was evident. Similar nests and sheets of neoplastic cells were present within the renal cortex and medulla, and a small nest was present within the hepatic parenchyma. This is the first record of this neoplasm in a degu.
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Vol. 26 • No. 1