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FIG 1. Initial MR images (600/10 [TR/TE]) obtained at presentation.
A, Contrast-enhanced fat-suppressed coronal T1-weighted image shows focal area of enhancement along the anterosuperior surface of the left petrous pyramid (arrow).
B, Contrast-enhanced fat-suppressed axial T1-weighted image shows enhancement along the anterosuperior surface of the left petrous pyramid with extension into the geniculate ganglion (long arrow) and the tympanic segment (short arrow) of the left facial nerve. On an adjacent image (not shown), the mass extended into the posterior left cavernous sinus.
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