Optic nerve meningioma invading the cranium in a dog | Meningiome du nerf optique envahissant la cavite cranienne chez un chien
2000
Poncelet, L. (Universite libre de Bruxelles (Belgium). Anatomie veterinaire) | Lybaert, P. | Coppens, A. | Lemort, M. | Salmon, I.
A seven-year-old neutered female Golden Retriever dog that had sustained a left eye enucleation two months before presentation was referred for suspected progressive blindness in the right eye and epileptic fits. A mass was palpated occupying the left orbit. The right eye was mydriatic and unresponsive to light. On computerised tomography, a partially calcified, homogeneously contrast enhanced mass occupied the left orbit but extended into the sulcus chiasmaticus and invested the proximal part of the right optic nerve. The mass eroded the wall of the left frontal sinus. Computerised tomography allowed an evaluation of the mass extends and the radiological features were compatible with a meningioma. The post mortem histopathology identified a syncitial meningioma with psamomatous bodies and intranuclear cytoplasmic inclusions.
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