Journal article

Ocular teratoid medulloepithelioma in a northern red-shouldered macaw: case report and literature review

Jeann Leal de Araujo, Alice CAM Arruda, Nayadjala TA Santos, Glenison F Dias, Thiago FL Nery, Fabio Del Piero, Richard Ploeg, Brian F Porter, Ingeborg M Langohr

JOURNAL OF VETERINARY DIAGNOSTIC INVESTIGATION | SAGE PUBLICATIONS INC | Published : 2021

Abstract

A 4-mo-old northern red-shouldered macaw (Diopsittaca nobilis) was admitted to the veterinary hospital of the Arruda Câmara Zoo, in the State of Paraiba, Brazil, for investigation of an orbital mass. Given rapid progression and lack of response to treatment, the bird was euthanized, and an autopsy was performed. Histologically, the mass consisted of a retrobulbar invasive tumor characterized by tubular and rosette-like structures, with interspersed heteroplastic tissues, such as aggregates of neuroglial cells and islands of hyaline cartilage. The tumor was immunopositive for pancytokeratin, GFAP, NSE, and S100. These findings were compatible with an ocular teratoid medulloepithelioma, a neop..

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University of Melbourne Researchers