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Updated: May 22, 2026

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Published on: July 5, 2021
A primitive neuroectodermal tumor with extension into the cranial vault in a dog
Malcolm J Gains1, Mylène-Kim Leclerc, Christian Bédard
1Département de pathologie et microbiologie, Faculté de médecine vétérinaire, Université de Montréal, St-Hyacinthe, Québec, Canada. malcolm.gains@umontreal.ca
Summary
This study details an unusual peripheral nervous system neoplasm case. The tumor extended into the cranial vault, confirmed as a peripheral primitive neuroectodermal tumor via necropsy and histology.
Area of Science:
- Neurology
- Oncology
- Veterinary Pathology
Background:
- Peripheral nervous system neoplasms are rare.
- Understanding their behavior and diagnostic features is crucial for effective management.
Observation:
- An unusual case of a peripheral nervous system neoplasm is presented.
- The tumor exhibited a 6-month clinical history with cranial vault extension.
- Clinical findings, cytology, and diagnostic imaging were documented.
Findings:
- Necropsy and histology confirmed the diagnosis.
- The neoplasm was identified as a peripheral primitive neuroectodermal tumor (pPNET).
Implications:
- This case highlights the potential for peripheral primitive neuroectodermal tumors to invade the cranial vault.
- Further research into the pathogenesis and treatment of such advanced neuroectodermal tumors is warranted.
- Accurate diagnosis through integrated clinical, imaging, and pathological data is essential.
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