cerebellopontine angle lipoma

Cerebellopontine angle (CPA) lipomas account for ~10% of all intracranial lipomas.

Characteristically lipomas of the CPA have the facial nerve and vestibulocochlear nerve coursing through it on their way to the internal auditory canal. They are associated with intravestibular lipomas and sensorineural hearing loss.

Radiographic features


Signal characteristics are those of a lipoma:

  • T1: high signal
  • T2: high signal
  • true FISP/FIESTA: low signal margin due to chemical shift artifact
  • fat-saturated sequences: shows signal dropout

Differential diagnosis

For a general discussion of the differential, refer to:

The differential for lesions with high T1 signal includes:

See also

Siehe auch:
und weiter: