Cerebellopontine angle lipoma

Case contributed by Prashant Gupta
Diagnosis almost certain


MRI requested for non-specific headache.

Patient Data

Age: 60 years
Gender: Female

A well-defined right cerebellopontine angle mass is seen that is hyperintense on T1 and T2, it is completely suppressed on the T2 fat sat images.

The NCCT confirms fatty nature of the lesion, the VIII nerve is seen to course through the mass with no apparent mass effect. Few peripheral calcific foci are seen- also a known feature of lipoma.

Case Discussion

Cerebellopontine angle lipoma comprise 10% of all intracranial lipoma. The differential would include dermoids but these are midline lesions and very rare at CP angle. However secondary CP angle involvement is described in suprasellar dermoids.

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