Case Report - Intracranial Meningioma in a Cat

The meningioma is the benign tumour of the meninges and may develop intracranially or inside the spinal canal, causing compression on the nervous tissue and subsequent severe clinical signs which may sometimes cause the death of the animal. Following the necropsic exam performed on a cat euthanized due to the increasing severity and frequency of epileptic seizures, the presence of a single intracranial tumour was assessed, exerting compression on the right cerebral hemisphere. The formation was non-adherent to the nervous tissue, mobile, well delimited, eliptic in shape, with irregular surface, low vascularization and about 2cm/1 cm in size. The histopathological exam showed that the tissue structure and cellular aspects of the tumoral formation were those of a psammomatous type meningioma. The cells were either spindle shaped or elliptic, mostly uniform in size and shape, displayed in nests and swirls connected in between them through conjunctive fibers. No mitotic figures that would indicate a high cellular proliferation rate were observed.