IMAGING DIAGNOSIS — UNILATERAL TRIGEMINAL NEURITIS MIMICKING PERIPHERAL NERVE SHEATH TUMOR IN A HORSE. Issue 1 (8th June 2015)

• Record Type: Journal Article
• Authors: Beltran, Elsa; Grundon, Rachael; Stewart, Jennifer; Biggi, Marianna; Holloway, Andrew; Freeman, Courtenay
• Is Part Of: Veterinary radiology & ultrasound. Volume 57:Issue 1(2016)
• Page Start: E1
• Page End: E4
• Publication Date: 2015-06-08
• Subjects: horse -- MRI -- neuritis -- trigeminal nerve; Veterinary radiology -- Periodicals; Radiologie vétérinaire -- Périodiques; Échographie vétérinaire -- Périodiques; Radiography -- Periodicals; Ultrasonography -- Periodicals; Diagnosis -- Periodicals; Veterinary Medicine -- Periodicals; Societies, Medical -- Periodicals; 636.089607
• DOI: 10.1111/vru.12272
• Languages: English
• ISSNs: 1058-8183

Abstract

Abstract : 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.