3.9 Article

Ependymal cyst in the caudal cranial fossa of a young Belgian Malinois dog with abnormal cerebrospinal fluid findings

Journal

ACTA VETERINARIA-BEOGRAD
Volume 73, Issue 3, Pages 439-448

Publisher

SCIENDO
DOI: 10.2478/acve-2023-0033

Keywords

aseptic meningitis; brain anomaly; congenital anomaly; ependymal cyst; intracranial cyst; working dog

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This article presents a clinical case of brain cyst in a Belgian Malinois dog. The study suggests that the clinical symptoms related to cysts could be associated with the size of the cyst and the impact on surrounding neuroanatomical structures.
Fluid-filled cavities within the brain are well-recognized in human and veterinary medicine. Congenital or acquired brain cystic lesions could be isolated or associated with other diseases. Clinical signs related to cysts depend on their size and the mass effect they exert on surrounding neuroanatomical structures. We present a case of a 5-month-old Belgian Malinois dog with cervical pain and right head tilt. The dog had a normal haematochemical profile and negative infectious disease tests. A contrast enhancement Computed Tomography scan revealed the presence of a thin-walled cystic lesion in the caudal cranial fossa at the level of the right pontine-cerebellar junction. A cerebrospinal fluid tap was performed by lumbar puncture, revealing a monocytic pleocytosis. After initial improvement following corticosteroid and antibiotic therapy, clinical signs worsened, and the dog underwent a second clinical evaluation and magnetic resonance imaging examination. After euthanasia a complete postmortem examination was performed. Histological and immunohistochemical findings were suggestive of an ependymal cyst.

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