Malignant trigeminal nerve Schwannoma diagnosed via biopsy of the infraorbital nerve in a dog

Matthew Green, Marti Pumarola, Mike Targett, Shirley Vanlelyveld, Mark Lowrie*

*Corresponding author for this work

Research output: Contribution to journalArticleResearchpeer-review

Abstract

A 12-year old, female neutered English Pointer presented with right-sided temporalis muscle atrophy and facial irritation over 2 weeks. Neurolocalisation was consistent with a right trigeminal neuropathy. MRI revealed a severely enlarged trigeminal nerve with involvement of the infraorbital nerve, which was palpable as a firm swelling over the maxilla. Incisional biopsy of the infraorbital nerve was performed and histopathological diagnosis was a malignant Schwannoma. Palliative chemotherapy was initiated. Two months following diagnosis the owner reported that the dog was doing well. This is the first report of a trigeminal nerve sheath tumour diagnosed via biopsy of the infraorbital nerve in a dog. Consideration should be given to evaluating the infraorbital nerve on clinical examination as well as MRI in cases of trigeminal neuropathy.

Original languageAmerican English
Article numbere001057
JournalVeterinary Record Case Reports
Volume8
Issue number1
DOIs
Publication statusPublished - 15 Mar 2020

Keywords

  • brain
  • cranial nerve
  • neoplasia
  • peripheral nerve
  • trigeminal neuropathy

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