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Extradural meningeal cystic lesion corresponding to type I meningeal cyst in a dog
  1. Federica Tirrito1,
  2. Rocco Lombardo1,2,
  3. Kaspar Matiasek3,
  4. Marco Rosati3 and
  5. Francesca Cozzi1
  1. 1 Clinica Neurologica Veterinaria NVA, Milan, Italy
  2. 2 Department VESPA, University of Milan, Milan, Italy
  3. 3 Center for Clinical Veterinary Medicine, Institute of Veterinary Pathology, Ludwig-Maximilians-University Munich, Munich, Germany
  1. Correspondence to Dr Federica Tirrito; federica.tirrito{at}


An 11-year-old spayed female dobermann was referred for progressive general proprioceptive ataxia and tetraparesis. MRI of the cervical spinal cord demonstrated a compressive, extradural, rounded space-occupying lesion at the C6-C7 right vertebral arch. The lesion was hypointense on T1-weighted images and hyperintense on T2-weighted images. The dog underwent decompressive surgery; a cystic lesion was removed. Histopathological examination revealed an extradural meningeal cyst corresponding to type I meningeal cyst. A few months after surgery, the neurological condition was substantially improved and no further deterioration was revealed one  year later. This is the first reported case of type I meningeal cyst in veterinary medicine. Meningeal type I cysts should be a differential diagnosis for large breed dogs with compressive myelopathy and imaging finding of extradural cystic lesions.

  • dogs
  • spinal cord
  • magnetic resonance imaging (MRI)
  • meningeal cyst
  • type I
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  • Contributors All authors listed have contributed significantly to the work, have read the manuscript, participated in the concept and design, analysis and interpretation of data, writing, or revision of the manuscript and take public responsibility for the content. All authors attest the validity and legitimacy of the data and its interpretation, and agree to its submission to Veterinary Record Case Reports.

  • Funding The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.

  • Competing interests None declared.

  • Provenance and peer review Not commissioned; externally peer reviewed.

  • Data sharing statement No additional data are available.

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