Intracranial meningioma causing internal ophthalmoparesis in a dog.
A 10-year-old, spayed female, Irish water spaniel was presented with a 2-week history of anisocoria characterized by mydriasis of the right eye compared to the left eye in ambient light. Ophthalmic and neurological examinations, combined with pharmacological testing, identified a disease process affecting the right parasympathetic nucleus of cranial nerve 3 (CN III) and/or the parasympathetic component of CN III. Magnetic resonance imaging (MRI) identified a mass involving the right midbrain and extending caudally to the rostral border of the medulla oblongata. The dog became comatose within 12 h following MRI and was euthanized. Histopathology identified the intracranial mass as a meningioma.
Webb
Aubrey A
AA
Department of Biomedical Sciences, Atlantic Veterinary College, Universit of Prince Edward Island, Charlottetown, PE, Canada.
Cullen
Cheryl L
CL
Rose
Patricia
P
Eisenbart
David
D
Gabor
Les
L
Martinson
Shannon
S
D000818:Animals; D004283:Dog Diseases / Q000175:diagnosis* / Q000473:pathology; D004285:Dogs; D017809:Fatal Outcome; D005260:Female; D008279:Magnetic Resonance Imaging; D008577:Meningeal Neoplasms / Q000150:complications / Q000175:diagnosis / Q000662:veterinary*; D008579:Meningioma / Q000150:complications / Q000175:diagnosis / Q000662:veterinary*; D009802:Oculomotor Nerve / Q000473:pathology; D009886:Ophthalmoplegia / Q000175:diagnosis / Q000209:etiology / Q000662:veterinary*