A rare, mostly benign, primary tumor of the meninges (arachnoid cap cells), usually located in the supratentorial compartment, commonly appearing in the sixth and seventh decade of life, clinically silent in most cases or causing hyperostosis close to the tumor and resulting in focal bulging and localized pain in less than 10% of cases. Additional features may include headache, seizures, gradual personality changes (apathy and dementia), anosmia, impaired vision, exophthalmos, hearing loss, ataxia, dysmetria, hypotonia, nystagmus, and rarely spontaneous bleeding.
CT demonstration of hemiatrophy and fatty replacement of the tongue.
Dion JE, Fox AJ, Pelz D, Vinuela F. J Can Assoc Radiol. 1984;35(4):395-6.
We report a patient in whom computed tomography was used to demonstrate denervation, hemiatrophy and fatty replacement of the tongue, secondary to lower motor neuron involvement of the hypoglossal nerve by a meningioma.
