1985•NeurosurgeryRequires access

Discrepancy between Computed Tomography and Magnetic Resonance Imaging in a Case of Medulloblastoma

Michael D. Heafner, Luis Schut, Roger J. Packer, Derek A. Bruce, Larissa T. Bilaniuk, Leslie N. Sutton

Abstract

In a 2-year-old girl with signs and symptoms of a posterior fossa tumor, the computed tomographic scan showed what appeared to be a brain stem glioma. However, magnetic resonance imaging (MRI) demonstrated the lesion to be extrinsic to the brain stem. Posterior fossa exploration disclosed a medulloblastoma filling the 4th ventricle. This discrepancy in imaging techniques points out the usefulness of MRI in the evaluation and treatment of posterior fossa lesions.

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Available abstract

Key concepts: Medicine, Magnetic resonance imaging, Medulloblastoma, Posterior fossa, Fourth ventricle, Computed tomography, Computed tomographic, Radiology