zerebellopontines Lipom (Lipom im Kleinhirnbrueckenwinkel)
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
MRI
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 generic article on intracranial lipomas
- differentials of a cerebellopontine angle mass
The differential for lesions with high T1 signal includes:
- hemorrhagic vestibular schwannoma
- neurenteric cyst
- thrombosed berry aneurysm
- white epidermoid
- ruptured intracranial dermoid
See also
Siehe auch:
- Lipom
- Tumor Kleinhirnbrückenwinkel
- Nervus facialis
- intrakranielle Lipome
- neuroenterische Zyste
- Nervus vestibulocochlearis
- Vestibularisschwannom
- white epidermoid
- IAM
- lipomatöses Meningeom
- sakkuläre zerebrale Aneurysmata
und weiter:


Lipom
⤙•⤚ zerebellopontines Lipom (Lipom im Kleinhirnbrueckenwinkel)
Tumor
Kleinhirnbrückenwinkel ⤙•⤚ zerebellopontines Lipom (Lipom im Kleinhirnbrueckenwinkel)
Nervus
facialis ⤙•⤚ zerebellopontines Lipom (Lipom im Kleinhirnbrueckenwinkel)
neuroenterische
Zyste ⤙•⤚ zerebellopontines Lipom (Lipom im Kleinhirnbrueckenwinkel)
intrakranielle
Lipome ⤙•⤚ zerebellopontines Lipom (Lipom im Kleinhirnbrueckenwinkel)
Nervus
vestibulocochlearis ⤙•⤚ zerebellopontines Lipom (Lipom im Kleinhirnbrueckenwinkel)
white
epidermoid ⤙•⤚ zerebellopontines Lipom (Lipom im Kleinhirnbrueckenwinkel)
Vestibularisschwannom
⤙•⤚ zerebellopontines Lipom (Lipom im Kleinhirnbrueckenwinkel)
sakkuläre
zerebrale Aneurysmata ⤙•⤚ zerebellopontines Lipom (Lipom im Kleinhirnbrueckenwinkel)