Cerebellopontine angle lipoma

Dr Owen Kang and A.Prof Frank Gaillard et al.

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 IAM. 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:

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Article information

rID: 1080
Synonyms or Alternate Spellings:
  • CPA lipoma
  • CP angle lipoma
  • Cerebellopontine angle lipomas
  • CPA lipomas

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Cases and figures

  • Case 1: CP angle lipoma
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  • Case 1: annotated
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  • Posterior fossa l...
    Case 2
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  • Case 3
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  • Case 4
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  • Case 5
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  • Case 6
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