Neuroblastoma with neuronal differentiation in the spinal cord in an Aberdeen Angus heifer calf

Veterinary Pathology
Howard SteinbergK M Nelson

Abstract

A 5-month-old, female, Aberdeen Angus heifer presented to the veterinary medical teaching hospital for evaluation of slowly progressive hindlimb ataxia. The calf was clinically normal until 4 months of age, following routine pregnancy and delivery. Neurologic examination revealed marked symmetric spastic hindlimb paraparesis. Thoracolumbar radiographs and cerebrospinal fluid (CSF) analysis were unremarkable. A presumptive diagnosis of T3-L3 myelopathy was made, and neurologic status remained static for 3 months with broad-spectrum antibiotic and nonsteroidal anti-inflammatory therapy. Additional diagnostic tests were refused, and a necropsy was performed following euthanasia. A moderately well delineated, reddish-tan, soft mass 18 mm in diameter replaced 80% of the fourth lumbar spinal cord segment. Histologic examination revealed two distinct features: undifferentiated, primitive, polygonal-to-round cells with typical morphologic characteristics of primitive neuroectoderm; and interspersed areas containing myelinated axons and cells with neuronal differentiation. Immunohistochemical examination confirmed the presence of primitive neuroepithelium and cells with neuronal differentiation.

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Citations

Jan 18, 2014·Journal of the American Veterinary Medical Association·Kristin M PattonHoward B Gelberg
Jan 25, 2014·Journal of Comparative Pathology·A M Arenas-GamboaR Storts
May 1, 2010·The Journal of Veterinary Medical Science·Yasutsugu MiwaNobuo Asaki
Apr 12, 2019·The Journal of Veterinary Medical Science·Yusuke SakaiMasahiro Morimoto

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