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PROBABLE TRIGEMINAL NERVE SCHWANNOMA IN A DOG
Author(s) -
Saunders J.H.,
Poncelet L.,
Clercx C.,
Snaps F.R.,
Flandroy P.,
Capasso P.,
Dondelinger R.F.
Publication year - 1998
Publication title -
veterinary radiology and ultrasound
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.541
H-Index - 60
eISSN - 1740-8261
pISSN - 1058-8183
DOI - 10.1111/j.1740-8261.1998.tb01647.x
Subject(s) - medicine , trigeminal nerve , anatomy , schwannoma , lesion , ganglion , trigeminal ganglion , biopsy , atrophy , brainstem , pathology , sensory system , psychology , psychiatry , cognitive psychology
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.