Extraventricular neurocytoma of the spinal cord in a dog

Veterinary Pathology
M HuisingaM Reinacher

Abstract

Central neurocytoma is a rare, prognostically favorable neuronal tumor of the human central nervous system, typically located intraventricularly near the foramen of Monro. Extraventricular cerebral neurocytomas and spinal tumors have also been reported. To date, however, neurocytomas have not been documented in domestic animal species. In this report, we describe a spinal cord tumor in a dog. The microscopic examination revealed tumor cells forming loosely packed clusters in some areas and palisades in other areas. In addition, they showed fine fibrillary neuropil-like areas of different sizes, sometimes resembling the "rosettes" of pineocytomas, as well as ependymoma-like perivascular pseudorosettes. The tumor cells had scant eosinophilic cytoplasm, with perinuclear halos, closely resembling the appearance of oligodendroglioma. Immunohistochemical staining showed expression of synaptophysin and neuron-specific enolase by tumor cells and pronounced in fibrillary areas. On the basis of histomorphology and immunohistochemical reactivity, the present tumor was diagnosed as extraventricular neurocytoma.

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Citations

Jan 1, 2013·Journal of Comparative Pathology·R P TraslavinaR J Higgins
Aug 25, 2010·The Veterinary Clinics of North America. Small Animal Practice·Rodney S Bagley
Sep 7, 2016·Tierärztliche Praxis. Ausgabe K, Kleintiere/Heimtiere·Iris VölkerMarion Hewicker-Trautwein
May 7, 2015·Journal of Veterinary Diagnostic Investigation : Official Publication of the American Association of Veterinary Laboratory Diagnosticians, Inc·Daniel R RissiBrian F Porter
Apr 15, 2016·Toxicologic Pathology·Susan A ElmoreErin M Quist
Jul 17, 2012·Veterinary Pathology·L WoolfordB A Summers
Jan 12, 2012·Journal of Veterinary Internal Medicine·J H RossmeislB S Jortner
Dec 10, 2015·Journal of Veterinary Science·Omer BesaltiOzan Ahlat

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