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FIG 3. Case 1: 25-year-old woman with meningocele.
A, Axial bone algorithm CT scan reveals scalloping of the trigeminal notch and a sharply marginated lesion extending into the left petrous apex (asterisk).
B, Axial contrast-enhanced fat-saturated T1-weighted SE (650/16/2) MR image reveals a low-signal-intensity cyst with mild rim enhancement within the left petrous apex (arrow).
C, Axial T2-weighted FSE (4350/90/2) MR image confirms hyperintense fluid signal within the apex lesion (arrow).
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