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- Indra Yousry, Alexander Muacevic, Vlad Olteanu-Nerbe, Thomas P Naidich, and Tarek A Yousry.
- Department of Neuroradiology, Klinikum Grosshadern, Ludwig-Maximilians University, Marchioninistr. 15, 81377 Munich, Germany. indra.yousry@ikra.med.uni-muenchen.de
- Eur Radiol. 2004 Jul 1; 14 (7): 1169-73.
AbstractWe describe a rare case of adult pilocytic astrocytoma in which exophytic growth from the brain stem presented as a right cerebellopontine angle mass. An initial MRI examination using T2- and T1-weighted images without and with contrast suggested the diagnosis of schwannoma. Subsequent use of 3D CISS (three-dimensional constructive interference in steady state) and T1-weighted contrast-enhanced 3D MP-RAGE (three-dimensional magnetization prepared rapid acquisition gradient echo) sequences led to the diagnosis of an exophytic brain stem tumor, documented the precise relationships of the tumor to cranial nerve VIII, revealed encasement of cranial nerves IX-XII (later confirmed intraoperatively), and provided the proper basis for planning surgical management.Copyright 2004 Springer-Verlag
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