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FIG 1. Fat-supressed T1-weighted coronal view MR images (550/9/1 [TR/TE/NEX]).
A, Soft-tissue enhancing mass is seen at the orbital apex, completely surrounding the unenhanced left optic nerve.
B, Image obtained anterior to the image shown in A shows homogenous perineural enhancement of the intracanicular portion of the left optic nerve.
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