PMC3928354_01
Gadolinium-enhanced magnetic resonance (MR) images. A : Preoperative MR image revealing the mass extended toward the middle fossa laterally and to the sphenoid sinus anteriorly. This lesion also extended to the cerebellopontine angle posteriorly with a compression of the brain stem. B : Postoperative MR image revealing resolution of the mass over the cavernous sinus region sinus.
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F1
Brain MRI demonstrated a lobulated mass predominantly involving the right cavernous sinus (Fig. 1A). A follow-up MRI of the brain revealed resolution of the mass over the cavernous sinus region (Fig. 1B).
Photomicrographs of the lesion showing a non-caseating granuloma (circle, A) with an asteroid body (arrow, B). H&E, original magnification, x100 (A), x400 (B).
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F2
A histopathological examination revealed a non-caseating granuloma with an asteroid body (Fig. 2).