Spontaneous CSF Otorrhea Caused by Abnormal Development of the Facial Nerve Canal

Article Figures & Data

Download figure
Open in new tab
Download powerpoint
fig 1.
A–C, 34-year-old man with three episodes of meningitis over the course of 1 year. High-resolution coronal temporal bone CT scans of the right ear show smooth enlargement of the right geniculate fossa (arrow, A) and of the labyrinthine facial nerve canal (arrow, B), and a normal labyrinthine facial nerve canal of the left ear (arrow, C)
Download figure
Open in new tab
Download powerpoint
fig 2.
5-year-old boy in whom myringotomy had been performed to correct left-sided otitis media.
A and B, Axial CT scans of the temporal bones show enlarged left geniculate fossa (arrow, A) and enlarged tympanic facial nerve canal (arrows, B).
C, Coronal T2-weighted MR image shows an area of high signal intensity, consistent with CSF superior to the cochlea in the region of the left geniculate fossa (arrow).