Fig 2.

A 45-year-old woman who underwent imaging to follow up a known right vestibular schwannoma. Axial T2 SPACE images demonstrate fluid within the geniculate ganglion of the left facial nerve canal, with dilation measuring up to 2.7 mm, compatible with a meningocele (long arrows, A and B). Fluid is also seen tracking along the expected course of the proximal left greater superficial petrosal nerve (short arrow, B). The known vestibular schwannoma is seen in the contralateral right internal auditory canal, extending through the porus acusticus (curved arrow, C).