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Updated: Jun 20, 2026
08:17
Scoring Central Nervous System Inflammation, Demyelination, and Axon Injury in Experimental Autoimmune Encephalomyelitis
Published on: February 23, 2024
Imaging diagnosis--necrotizing meningomyelitis and polyarthritis
Andrew T Parry1, Victoria A Penning, Ken C Smith
1Department of Veterinary Clinical Sciences, Royal Veterinary College, University of London, Hawkshead Lane, North Mymms, Hertfordshire AL9 7TA, UK. aparry@rvc.ac.uk
Summary
A rapid-onset myelitis in a vaccinated Weimaraner caused progressive hindlimb ataxia and pain. Postmortem examination revealed myelitis, vasculitis, and polyarthritis, highlighting severe inflammatory neurological disease in dogs.
Area of Science:
- Veterinary Neurology
- Immunology
- Pathology
Background:
- Myelitis, inflammation of the spinal cord, can cause severe neurological deficits in dogs.
- Vaccination status and breed may influence susceptibility to certain neurological conditions.
Observation:
- A 2-year-old Weimaraner presented with acute bilateral pelvic limb ataxia, progressing to nonambulatory status within 12 hours.
- Clinical signs included spinal pain, multiple joint effusions, and paraplegia.
- Magnetic resonance (MR) imaging revealed diffuse, asymmetric T2-hyperintensity and contrast enhancement in the thoracolumbar spinal cord.
- Cerebrospinal fluid (CSF) analysis showed elevated white blood cell count and protein.
Findings:
- Presumptive diagnosis of diffuse myelitis based on MR imaging and CSF analysis.
- Postmortem examination confirmed myelitis, vasculitis, and nonerosive polyarthritis.
Implications:
- This case highlights a severe, rapidly progressive inflammatory spinal cord disease in a young dog.
- The findings suggest a potential link between myelitis, vasculitis, and polyarthritis, warranting further investigation into underlying causes and diagnostic markers.
- Understanding such conditions is crucial for accurate diagnosis and management of neurological disorders in canine patients.
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