Intracranial meningioma in a pet rat: MRI findings
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Published:2021-07-30
Issue:No. 9
Volume:66
Page:406-412
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ISSN:0375-8427
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Container-title:Veterinární Medicína
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language:
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Short-container-title:Veterinarni Medicina
Author:
Cococcetta C,Del Signore F,Cerasoli I,Di Guardo G,Baffoni M,Di Francesco G,Crocchianti V,Vignoli M
Abstract
We herein report the magnetic resonance imaging (MRI) findings in a brain meningioma in a pet rat (Rattus norvegicus domestica). A 1.5-year-old pet rat was referred for depression, ataxia, tremors and bilateral nystagmus; a brain MRI was elected suspecting an intracranial neoplasia. The study was performed with a 0.25 T scanner. The MRI revealed a well-defined oval mass with a heterogeneous appearance, hyperintense in T1 and T2, and with extra-axial localisation and severe brain compression, the mass appeared strongly and diffusely contrast-enhancing. Euthanasia was elected, with the necropsy confirming the presence of a voluminous extra-axial mass. Histologically, a well-differentiated, benign meningotheliomatous meningioma was diagnosed, with the histochemical stains allowing one to exclude a granular cell tumour. To the best of our knowledge, this is the first report of MRI investigations on a pet rat intracranial meningioma.
Publisher
Czech Academy of Agricultural Sciences
Subject
General Veterinary