
Thoracolumbar meningeal fibrosis in pugs
Author(s) -
Rohdin Cecilia,
Ljungvall Ingrid,
Häggström Jens,
Leijon Alexandra,
LindbladToh Kerstin,
Matiasek Kaspar,
Rosati Marco,
Wohlsein Peter,
Jäderlund Karin Hultin
Publication year - 2020
Publication title -
journal of veterinary internal medicine
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.356
H-Index - 103
eISSN - 1939-1676
pISSN - 0891-6640
DOI - 10.1111/jvim.15716
Subject(s) - medicine , spinal cord , myelopathy , lesion , dura mater , lumbosacral joint , magnetic resonance imaging , spinal canal , pathology , radiology , surgery , psychiatry
Background Thoracolumbar myelopathies associated with spinal cord and vertebral column lesions, with a similar clinical phenotype, but different underlying etiologies, occur in pugs. Objectives To further characterize the clinical and neuropathological characteristics of pugs with longstanding thoracolumbar myelopathy. Animals Thirty client‐owned pure‐bred pugs with a history of more than a month of ataxia and paresis of the pelvic limbs, suggesting a myelopathy localized to the thoracolumbar spinal cord, were included in the study. Methods Prospective clinicopathological study. Included pugs underwent a complete neurological examination and gross and histopathologic postmortem studies with focus on the spinal cord. Computed tomography (n = 18), magnetic resonance imaging (n = 17), and cerebrospinal fluid analysis (n = 27) were performed before or immediately after death. Results Twenty male and 10 female pugs had a median age at clinical onset of 84 months (interquartile range, 66‐96). Affected pugs presented with a progressive clinical course and 80% were incontinent. There was circumferential meningeal fibrosis with concomitant focal, malacic, destruction of the neuroparenchyma in the thoracolumbar spinal cord in 24/30 pugs. Vertebral lesions accompanied the focal spinal cord lesion, and there was lympho‐histiocytic inflammation associated or not to the parenchymal lesion in 43% of the pugs. Conclusions and Clinical Importance Meningeal fibrosis with associated focal spinal cord destruction and neighboring vertebral column lesions were common findings in pugs with long‐standing thoracolumbar myelopathy.