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February 14, 2026Veterinary Medicine and ScienceOpen Access

Primary Meningeal Extraskeletal Osteosarcoma in a Domestic Shorthaired Cat: Case Report and Review of Comparative Pathology

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Authors

JPJacqueline PoldyDCDario CostanzaANAran Nagendran

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Overview

Case report reveals an extraskeletal osteosarcoma in a cat's meninges, suggesting a new differential for tumours.

Key Points

  • To present a rare case of extraskeletal osteosarcoma located in the meninges of a domestic shorthaired cat and discuss its implications for diagnosis.
  • Case report detailing clinical signs and diagnostic imaging results
  • Magnetic resonance imaging used to evaluate the mass
  • Post-mortem examination performed, including gross and histological analysis
  • Diagnosis confirmed as extraskeletal osteosarcoma through histological assessment
  • The neoplasm exhibited local osteolytic destruction of the frontal bone
  • Clinical signs were consistent with a space-occupying cerebral lesion

Cite This Study

Poldy et al. (2026) studied this question.

synapsesocial.com/papers/699011932ccff479cfe585bchttps://doi.org/10.1002/vms3.70771
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Also Consider

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

  1. 1Case Report: Feline spinous process giant-cell osteosarcoma2026
  2. 2Case Report: Primary intracranial lymphoma and meningioma manifesting as a composite tumor in a cat2025
  3. 3Fibrohistiocytic osteosarcoma in the metatarsus of a domestic shorthair cat: a case report2025
  4. 4MRI of a presumptive intracranial histiocytic sarcoma with extracranial extension in a cat2024
  5. 5Spinal Cord Medulloepithelioma in a Cat2024 · 2 citations