Presentation
Left hearing loss.
Patient Data
Age: 55 years
Gender: Female
From the case:
Lipoma-cerebellopontine angle
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There is a small well-circumscribed lesion in the left cerebellopontine angle (CPA), of high signal intensity on T1WI, and T2WI with signal dropout on T1 fat saturated sequence. Note the vestibulocochlear nerve and facial nerve coursing within the lesion on their way to the IAM, well-visualized on all sequences, mainly on axial-SSFP.
Case Discussion
MRI feature of a cerebellopontine angle lipoma.
Others lesions must be considered in the differential diagnosis of a T1 high signal lesion of the CPA:
- dermoid cyst
- white epidermoid
- hemorrhagic acoustic schwannoma
- neurenteric cyst
- thrombosed berry aneurysm
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