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1 March 2015 Diagnosis of Retrobulbar Round Cell Neoplasia in a Macaroni Penguin ( Eudyptes chrysolophus) Through Use of Computed Tomography
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Abstract

A 25-year-old female macaroni penguin (Eudyptes chrysolophus) was diagnosed with exophthalmos secondary to retrobulbar neoplasia through use of computed tomography (CT). Histopathologic examination of the mass supported a diagnosis of malignant round cell neoplasia. Immunohistochemical (IHC) labeling was applied to determine cell origin; the neoplastic cells did not label with T-cell marker CD3 or B-cell marker BLA.36 and could not be further characterized. The scleral ossicles precluded evaluation of the retrobulbar space by ultrasonography; therefore, CT scanning is recommended for examination of intraorbital structures in penguin and other avian species.

Sarah J. Woodhouse, Michelle Rose, Danielle R. Desjardins, Dipl ACVP, and Dalen W. Agnew "Diagnosis of Retrobulbar Round Cell Neoplasia in a Macaroni Penguin ( Eudyptes chrysolophus) Through Use of Computed Tomography," Journal of Avian Medicine and Surgery 29(1), (1 March 2015). https://doi.org/10.1647/2014-014
Published: 1 March 2015
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