PMC3358957_01
Preoperative MRI shows a large multi-lobulated, heterogeneous and rim enhanced mass on lower aspect of fourth ventricle and foramen of magendie, measuring 25x27x40 mm in volume with exophytic feature
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F1
Preoperative magnetic resonance imaging (MRI) depicted a large multi-lobulated, heterogeneous, rim enhanced mass on lower aspect of fourth ventricle and foramen of magendie with exophytic feature and measuring 25x27x40 mm [Figure 1].
PMC3358957_02
Hematoxylin and eosin stain with x100 magnification: The characteristic pseudopalisading appearance with geographical necrosis, pleomorphic nuclear atypia, and microvascular proliferation are observed
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F2
Histopathological examination of the serially sectioned paraffin embedded brain tissue confirmed the diagnosis of GBM  [Figure 2].
PMC3358957_03
Immediate postoperative MR imaging showed a small remnant tissue with enhancement at the caudal and ventral portion of previous tumor
AJNS-7-36-g003.jpg
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F3
Postoperative MR imaging [Figure 3] showed a small remnant tissue with enhancement at the foramen of magendie.