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Computed tomography–guided brain biopsy for in vivo diagnosis of a cholesterinic granuloma in a horse

Katleen Vanschandevijl DVM1, Ingrid Gielen DVM, PhD2, Heidi Nollet DVM, PhD3, Lieven Vlaminck DVM, PhD4, Piet Deprez DVM, PhD5, and Henri van Bree DVM, PhD6
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  • 1 Department of Large Animal Internal Medicine, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, Merelbeke, Belgium
  • | 2 Department of Medical Imaging, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, Merelbeke, Belgium
  • | 3 Department of Large Animal Internal Medicine, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, Merelbeke, Belgium
  • | 4 Department of Surgery and Anaesthesiology, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, Merelbeke, Belgium
  • | 5 Department of Large Animal Internal Medicine, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, Merelbeke, Belgium
  • | 6 Department of Medical Imaging, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, Merelbeke, Belgium

Abstract

Case Description—An 8-year-old warmblood mare was evaluated following an acute onset of neurologic abnormalities.

Clinical Findings—Computed tomography of the head revealed large masses in both lateral ventricles, and a presumptive diagnosis of cholesterinic granuloma was made.

Treatment and Outcome—Freehand biopsy of the intracranial masses was performed under computed tomographic guidance, and histologic examination of biopsy specimens confirmed the diagnosis. No adverse effects associated with the brain biopsy procedure were encountered. Clinical signs resolved, and long-term follow-up did not reveal any recurrence of neurologic deficits. The horse was able to return to its previous level of training.

Clinical Relevance—Findings suggested that computed tomographic–guided brain biopsy is feasible in horses and can be used to establish a diagnosis in horses with intracranial masses.

Abstract

Case Description—An 8-year-old warmblood mare was evaluated following an acute onset of neurologic abnormalities.

Clinical Findings—Computed tomography of the head revealed large masses in both lateral ventricles, and a presumptive diagnosis of cholesterinic granuloma was made.

Treatment and Outcome—Freehand biopsy of the intracranial masses was performed under computed tomographic guidance, and histologic examination of biopsy specimens confirmed the diagnosis. No adverse effects associated with the brain biopsy procedure were encountered. Clinical signs resolved, and long-term follow-up did not reveal any recurrence of neurologic deficits. The horse was able to return to its previous level of training.

Clinical Relevance—Findings suggested that computed tomographic–guided brain biopsy is feasible in horses and can be used to establish a diagnosis in horses with intracranial masses.

Contributor Notes

Presented at the European Association of Veterinary Diagnostic Imaging Annual Conference, Ghent, Belgium, September 2004.

The authors thank Dr. Linde Stessens for assistance with histologic analyses and Drs. Frank Weyns and Jan Monstrey for advice regarding neurosurgery.

Address correspondence to Dr. Vanschandevijl.