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A 64 year old woman presented with tinnitus of the right ear.
MRI scans: (Left) T1-weighted axial; (Middle) T1-weighted with gadolinium axial; (Right) T1-weighted with gadolinium coronal. Note the small nodular mass adjacent to the lower pons on the right. The mass enhances with gadolinium. On biopsy, this lesion was a schwannoma, a histologically benign tumor. Schwannomas are characteristically seen arising from cranial nerve VIII, where they are known as acoustic neuromas.
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