Intracranial meningioma in a pet rat: MRI findings

C Cococcetta, F Del Signore, I Cerasoli, G Di Guardo, M Baffoni, G Di Francesco, V Crocchianti and M Vignoli
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C Cococcetta: Veterinary Teaching Hospital, University of Teramo, Teramo, Italy
F Del Signore: Veterinary Teaching Hospital, University of Teramo, Teramo, Italy
I Cerasoli: Veterinary Teaching Hospital, University of Teramo, Teramo, Italy
G Di Guardo: Veterinary Teaching Hospital, University of Teramo, Teramo, Italy
M Baffoni: Veterinary Teaching Hospital, University of Teramo, Teramo, Italy
G Di Francesco: Istituto Zooprofilattico Sperimentale dell'Abruzzo e Molise "G. Caporale", Teramo, Italy
V Crocchianti: Veterinary Teaching Hospital, University of Teramo, Teramo, Italy
M Vignoli: Veterinary Teaching Hospital, University of Teramo, Teramo, Italy

Veterinární medicína, 2021, vol. 66, issue 9, 406-412

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.

Keywords: benign meningotheliomatous meningioma; brain tumour; magnetic resonance imaging; Rattus norvegicus (search for similar items in EconPapers)
Date: 2021
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Persistent link: https://EconPapers.repec.org/RePEc:caa:jnlvet:v:66:y:2021:i:9:id:191-2020-vetmed

DOI: 10.17221/191/2020-VETMED

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