Annalis Cigarroa, Peter J Early*, Mancini Shelby L1, Luke Borst B, Megan Schreeg E
A five-year-old male castrated Jack Russell Terrier was presented for cervical pain and left thoracic limb lameness of one-year duration. Magnetic Resonance Imaging (MRI) revealed a 1.1 x 0.7 x 0.8 cm lesion at the level of the seventh cervical spinal nerve with infiltration into the spinal cord. Surgical removal was elected, and all visible tumour was excised. Histopathology was supportive of a mesenchymal tumour consistent with components of both a fibrolipomatous hamartoma, proximally and a peripheral nerve sheath tumour distally. Radiation Therapy (RT) was elected post-operatively. MRI was repeated for RT planning one-month post- operatively and for recurrence of symptoms ten months post-operatively. This is the only report in literature to document a mixed tumour characteristic of both a fibrolipomatous hamartoma and peripheral nerve sheath tumour, and the second case report to document surgical exploration of a hamartoma in the canine spinal canal.
