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Peer-reviewed veterinary case report

Brain tumor with ependymal cells in 18-month-old Australian terrier

By Headley, S A et al.·Published in Journal of comparative pathology·2009·Department of Basic Veterinary Sciences·View original on PubMed

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Original publication title: Central primitive neuroectodermal tumour with ependymal differentiation in a dog.

Species:
dog

Plain-English summary

An 18-month-old female Australian terrier was brought in after showing signs of central nervous system disease and sadly passed away. A large tumor in her brain replaced parts of the thalamus and hypothalamus, causing serious health issues. The tumor was identified as a central primitive neuroectodermal tumor (PNET) with ependymal differentiation, which is a rare type of brain tumor in dogs. Unfortunately, despite the diagnosis, the outcome was not favorable, and the dog did not survive.

People also search for: dog brain tumor symptoms · Australian terrier central nervous system disease · dog PNET treatment options

Abstract

A central primitive neuroectodermal tumour (PNET) with ependymal differentiation was identified in an 18-month-old female Australian terrier dog that died following signs of central nervous system disease. A large space-occupying haemorrhagic mass replaced the thalamus and part of the hypothalamus of the brain. Microscopical examination revealed a tumour formed by a compact sheet of small cells that contained ependymal and perivascular pseudorosettes. Immunohistochemically, the neoplastic cells variably expressed glial fibrillary acidic protein, neuron-specific enolase, vimentin and cytokeratin, consistent with divergent differentiation of the tumour. This case is thought to represent the first description of PNET with ependymal differentiation in a dog.

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Original publication on PubMed: https://pubmed.ncbi.nlm.nih.gov/19091324/