PROBABLE TRIGEMINAL NERVE SCHWANNOMA IN A DOG |
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| Authors: | JH Saunders DVM L Poncelet DVM DScV C Clercx DVM PHD FR Snaps DVM DScV P Flandroy MD P Capasso MD RF Dondelinger MD |
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| Institution: | Departments of Medical Imaging, University Hospital Center-B35, University of Liège, 4000 Liège, Belgium.;Departments of Small Animal Internal Medecine, University Hospital Center-B35, University of Liège, 4000 Liège, Belgium.;Departments of Small Animal Surgery of the Faculty of Veterinary Medicine, Department of Medical Imaging, University Hospital Center-B35, University of Liège, 4000 Liège, Belgium. |
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| Abstract: | A 7-year-old male Husky dog developed atrophy of the right masseter muscle and pruritis of the right side of the face. A myogenic origin was excluded using muscular biopsy. Electrophysiologically, there was involvement of the motor and sensory fibers of the trigeminal nerve, suggesting a lesion located between the brainstem and the trigeminal ganglion. On MRI examination, a nodular mass was detected in the right caudal fossa. This mass was characterized by intense enhancement after injection of contrast medium. Because of the progressive clinical signs, electrophysiology, and MRI results, a presumptive diagnosis of a trigeminal nerve schwannoma was made. The animal's condition improved slightly with corticosteroids. The dog underwent euthanasia 3 months after initial presentation. Necropsy was not performed. |
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| Keywords: | dog MRI trigeminal nerve schwannoma diagnostic imaging |
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