Keywords
epidermoid cyst - trigeminal - neuralgia - technique
Fig. 1 Axial diffusion weighted and axial T2 B-FFE MRI demonstrating a diffusion restricting
lesion in the right cerebellopontine angle compressing the root entry zone of the
right trigeminal nerve and indenting the pons. B-FFE, balanced fast field echo; MRI,
magnetic resonance imaging.
Fig. 2 A right retrosigmoid craniectomy demonstrated a pearly white, friable lesion (arrows)
compressing and encasing the trigeminal nerve (*) that was diagnosed as an epidermoid
cyst on pathology.
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