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IMAGING DIAGNOSIS — UNILATERAL TRIGEMINAL NEURITIS MIMICKING PERIPHERAL NERVE SHEATH TUMOR IN A HORSE
Author(s) -
Beltran Elsa,
Grundon Rachael,
Stewart Jennifer,
Biggi Marianna,
Holloway Andrew,
Freeman Courtenay
Publication year - 2015
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/vru.12272
Subject(s) - medicine , trigeminal nerve , magnetic resonance imaging , neuritis , lesion , horse , warmblood , neuroma , supraorbital nerve , peripheral , nerve root , anatomy , pathology , radiology , corneal reflex , surgery , reflex , paleontology , biology
A 16‐year old Warmblood gelding presented with a nonhealing corneal ulcer and absent corneal sensation in the left eye. A lesion affecting the maxillary and ophthalmic branches of the left trigeminal nerve was suspected. Magnetic resonance (MR) imaging identified marked thickening of the ophthalmic and maxillary branches of the left trigeminal nerve. The nerve was iso‐ to hypointense on T1‐weighted and T2‐weighted images with heterogeneous enhancement. A peripheral nerve sheath tumor was suspected, however granulomatous neuritis was histopathologically confirmed. These inflammatory changes can result in severe nerve enlargement and should be considered with MR findings suggestive of peripheral nerve sheath tumor.