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A vividly-enhancing mildly heterogenous (predominantly T1 hypointense / mildly T2 hyperintense) ovoid mass is centered within the left Meckle's cave, indenting the left cavernous sinus, sella and petrous apex.It is uncertain whether this represents a trigeminal Schwannoma or meningioma, with the former slightly favored.
The left cavernous ICA is mildly effaced/displaced, with no overt compression.
Note is made of a mildly expanded "empty sella".
The left MCA bifurcation appears mildly dilated and follow-up MRA could be used to exclude the presence of an aneurysm in this location.
The remainder of the study is unremarkable.
The Imaging findings are those of a trigeminal schwannoma.
Possible Meckel's cave tumors include:
- trigeminal schwannoma: most common, ~33% of cases
- pituitary macroadenoma
- epidermoid cyst
- base of skull tumors