MR images showing the MFH of the posterior cranial fossa in preoperative and postoperative follow-up. A, B, C) MR images showing an expansive mass of the posterior cranial fossa with an irregular outline involving the right cerebellar hemispheres, posterior fossa dura, occipital bone and the torcular herophili. The signal intensity of the lesion is slightly hyperintense on the T1-weighted Gd-enhanced image. T1-weighted Gd-enhanced image showing moderate heterogeneous enhancement throughout the lesion. D, E, F) Postoperative early stage MR images showing no residual mass lesion. G, H, I) Follow-up MRI on the postoperative sixth month showing tumor non-recurrence. MR, magnetic resonance.