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Figure 1: (a) T2 axial magnetic resonance (MR) image showing a well-defined extraaxial mass lesion in right cerebellopontine angle with extension into right temporal bone and middle cranial fossa. Fourth ventricle is not compressed. (b and c) Axial contrast enhanced MR images demonstrate a well-defined homogenously enhancing dumbbell-shaped mass lesion with a small posterior and a sizeable middle fossa component. Also shown is the geniculate ganglion (c, arrow) which neither is seen normally nor in a vestibular schwannoma patient, and is a characteristic radiological feature of facial schwannoma. (d) Coronal contrast MR showing bi-lobed mass with enhancing geniculate ganglion

Figure 1: (a) T2 axial magnetic resonance (MR) image showing a well-defined extraaxial mass lesion in right cerebellopontine angle with extension into right temporal bone and middle cranial fossa. Fourth ventricle is not compressed. (b and c) Axial contrast enhanced MR images demonstrate a well-defined homogenously enhancing dumbbell-shaped mass lesion with a small posterior and a sizeable middle fossa component. Also shown is the geniculate ganglion (c, arrow) which neither is seen normally nor in a vestibular schwannoma patient, and is a characteristic radiological feature of facial schwannoma. (d) Coronal contrast MR showing bi-lobed mass with enhancing geniculate ganglion