Case Report

Trigeminal Neurilemoma Appearance on Magnetic Resonance Imaging

Authors: BONNIE M. EMBRY MD, RONALD PRITCHARD MD

Abstract

INTRACRANIAL NEURILEMOMAS are readily demonstrable by computerized tomography (CT), as has been shown over the past ten years. Small tumors located about the base of the skull and the posterior cranial fossa, however, can be difficult to detect by CT because of bone artifact. Though intracranial trigeminal neurilemomas can arise anywhere along the fifth cranial nerve, they arise most commonly within Meckels cavity, and therefore are extradural. This report demonstrates the ability of magnetic resonance imaging (MRI) to detect neurilemomas in Meckels cavity. Images were obtained with a Signa 1.5T MRI unit (General Electric Medical Systems Group, Milwaukee).

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References