Brain invasion by an otherwise benign meningioma in a cat
Case summary A 13-year-old castrated male American Shorthair cat was referred for evaluation following a 3-week history of poor balance and decreased activity. The MRI findings revealed a well-defined left caudal cerebellar mass with a diameter of 1.2 cm, consistent with a meningioma. CT and MRI sca...
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| Main Authors: | , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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SAGE Publishing
2024-12-01
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| Series: | Journal of Feline Medicine and Surgery Open Reports |
| Online Access: | https://doi.org/10.1177/20551169241291842 |
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| _version_ | 1850115416019435520 |
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| author | Kiyotaka Arai Shinichi Nakamura Kanami Matsubara Yuma Ozaki Sho Kadekaru Akihiko Sugiyama Ikki Mitsui Natsuki Akashi Ryohei Yoshitake Kenji Kutara |
| author_facet | Kiyotaka Arai Shinichi Nakamura Kanami Matsubara Yuma Ozaki Sho Kadekaru Akihiko Sugiyama Ikki Mitsui Natsuki Akashi Ryohei Yoshitake Kenji Kutara |
| author_sort | Kiyotaka Arai |
| collection | DOAJ |
| description | Case summary A 13-year-old castrated male American Shorthair cat was referred for evaluation following a 3-week history of poor balance and decreased activity. The MRI findings revealed a well-defined left caudal cerebellar mass with a diameter of 1.2 cm, consistent with a meningioma. CT and MRI scans did not reveal metastasis. After a suboccipital craniotomy, the mass was resected subtotally as a result of parenchymal invasion. A histopathological examination revealed a benign fibrous meningioma with invasion into the cerebellum at the tumour margins. Postoperatively, the cat remained asymptomatic for 25 months, but ataxia recurred, and tumour recurrence was confirmed using MRI and post-mortem examination. Relevance and novel information This case demonstrates that even feline meningiomas with benign features can exhibit brain invasion. Since brain invasion is an indicator of malignancy in meningioma, a detailed histopathological evaluation of the tumour margins is essential for accurate grading and prognosis. |
| format | Article |
| id | doaj-art-96817b68a9b24ca49c27bf309e6ade01 |
| institution | OA Journals |
| issn | 2055-1169 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | SAGE Publishing |
| record_format | Article |
| series | Journal of Feline Medicine and Surgery Open Reports |
| spelling | doaj-art-96817b68a9b24ca49c27bf309e6ade012025-08-20T02:36:34ZengSAGE PublishingJournal of Feline Medicine and Surgery Open Reports2055-11692024-12-011010.1177/20551169241291842Brain invasion by an otherwise benign meningioma in a catKiyotaka Arai0Shinichi Nakamura1Kanami Matsubara2Yuma Ozaki3Sho Kadekaru4Akihiko Sugiyama5Ikki Mitsui6Natsuki Akashi7Ryohei Yoshitake8Kenji Kutara9Laboratory of Veterinary Surgery, Faculty of Veterinary Medicine, Okayama University of Science, Imabari, Ehime, JapanLaboratory of Veterinary Pathology, Faculty of Veterinary Medicine, Okayama University of Science, Imabari, Ehime, JapanLaboratory of Veterinary Pathology, Faculty of Veterinary Medicine, Okayama University of Science, Imabari, Ehime, JapanLaboratory of Veterinary Pathology, Faculty of Veterinary Medicine, Okayama University of Science, Imabari, Ehime, JapanLaboratory of Veterinary Pathology, Faculty of Veterinary Medicine, Okayama University of Science, Imabari, Ehime, JapanLaboratory of Veterinary Pathology, Faculty of Veterinary Medicine, Okayama University of Science, Imabari, Ehime, JapanLaboratory of Veterinary Anatomy, Faculty of Veterinary Medicine, Okayama University of Science, Imabari, Ehime, JapanLaboratory of Veterinary Anesthesiology, Faculty of Veterinary Medicine, Okayama University of Science, Imabari, Ehime, JapanFaculty of Veterinary Medicine, Okayama University of Science, Imabari, Ehime, JapanLaboratory of Veterinary Internal Medicine I, Faculty of Veterinary Medicine, Okayama University of Science, Imabari, Ehime, JapanCase summary A 13-year-old castrated male American Shorthair cat was referred for evaluation following a 3-week history of poor balance and decreased activity. The MRI findings revealed a well-defined left caudal cerebellar mass with a diameter of 1.2 cm, consistent with a meningioma. CT and MRI scans did not reveal metastasis. After a suboccipital craniotomy, the mass was resected subtotally as a result of parenchymal invasion. A histopathological examination revealed a benign fibrous meningioma with invasion into the cerebellum at the tumour margins. Postoperatively, the cat remained asymptomatic for 25 months, but ataxia recurred, and tumour recurrence was confirmed using MRI and post-mortem examination. Relevance and novel information This case demonstrates that even feline meningiomas with benign features can exhibit brain invasion. Since brain invasion is an indicator of malignancy in meningioma, a detailed histopathological evaluation of the tumour margins is essential for accurate grading and prognosis.https://doi.org/10.1177/20551169241291842 |
| spellingShingle | Kiyotaka Arai Shinichi Nakamura Kanami Matsubara Yuma Ozaki Sho Kadekaru Akihiko Sugiyama Ikki Mitsui Natsuki Akashi Ryohei Yoshitake Kenji Kutara Brain invasion by an otherwise benign meningioma in a cat Journal of Feline Medicine and Surgery Open Reports |
| title | Brain invasion by an otherwise benign meningioma in a cat |
| title_full | Brain invasion by an otherwise benign meningioma in a cat |
| title_fullStr | Brain invasion by an otherwise benign meningioma in a cat |
| title_full_unstemmed | Brain invasion by an otherwise benign meningioma in a cat |
| title_short | Brain invasion by an otherwise benign meningioma in a cat |
| title_sort | brain invasion by an otherwise benign meningioma in a cat |
| url | https://doi.org/10.1177/20551169241291842 |
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