Peer-reviewed veterinary case report
Cat brain tumor growing outside the skull bone
By Karli, Philemon et al.·Published in Journal of feline medicine and surgery·2013·Small Animal Hospital·View original on PubMed →
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Original publication title: Extracranial expansion of a feline meningioma.
- Species:
- cat
Plain-English summary
A 13-year-old neutered male cat was brought in after showing changes in behavior over the past year. The veterinarian found signs of a brain issue, and MRI scans revealed a tumor on the right side of the brain that had expanded outside the skull. The cat underwent surgery to remove the tumor, and after the procedure, he recovered well with no lasting neurological problems. A follow-up after a year confirmed he was doing fine, and the tumor was identified as a grade 1 meningioma, which is a type of brain tumor.
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Abstract
Meningioma is the most frequently observed primary brain tumour in cats. Usually, it is associated with an intracranial expansion with consequent brain compression, oedema and brain herniation. Typical features of feline intracranial meningiomas are hyperostosis of the adjacent bone and intratumoral mineralisation. We describe a 13-year-old male neutered cat with a 1-year history of behavioural change. At clinical and neurological examination the cat showed signs consistent with right-sided forebrain lesion. Magnetic resonance images showed a right-sided extra-axial contrast enhancing mass in the region of the frontotemporal lobe. The overlying bone of the calvarium showed a marked defect with extracranial expansion of the tissue. Surgery was performed and the tumour could be exposed by a right-sided temporal approach. After extension of the bony defect the mass could be removed properly. The cat recovered well from surgery and a 12-month follow-up showed no persistent neurological deficits. Histopathological assessment of the tumour revealed a transitional grade 1 meningioma. Despite osteolysis and extracranial expansion of the tumour differentials should include menigioma in feline intracranial neoplasms.
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Search related cases →Original publication on PubMed: https://pubmed.ncbi.nlm.nih.gov/23295269/