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Keywords:

  • brain biopsy;
  • brain tumor;
  • dog;
  • intracranial neoplasia;
  • magnetic resonance imaging

Although histologic examination following stereotactic or surgical brain biopsy is required for definitive antemortem diagnosis of intracranial neoplasms, these tumors are often associated with magnetic resonance (MR) imaging features that warrant a presumptive or prioritized differential diagnosis. The MR imaging features of common canine central nervous system (CNS), adenohypophyseal, and metastatic intracranial neoplasms are reviewed. Characterization of neoplasms by histologic type and biological grade is based on the 2007 World Health Organization classification system for CNS tumors in humans.