PMC4866066_01
Preoperative images. (a) Sagittal T2 image demonstrating a heterogeneous posterior fossa lesion with compression of the cerebellum and enlargement of the supratentorial ventricles. (b) Contrast-enhanced axial T1 image of the posterior fossa lesion demonstrating avid contrast enhancement. (c) Axial T2 MRI showing significant heterogeneity within the lesion with effacement of the fourth ventricle
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F1
Magnetic resonance imaging (MRI) was obtained, which revealed a very large dural-based extraaxial mass along the dorsal aspect of the posterior fossa [Figure 1].
Postoperative sagittal T2-weighted image showing gross total resection with decompression of the cerebellum
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F2
Postoperative imaging revealed gross total resection of the mass and significant decompression of the brainstem and cerebellum [Figure 2].