Cerebellopontine angle mass (mnemonic)

Mnemonics for the common cerebellopontine angle masses include:

• AMEN or MEAN
• SAME
• ANGLES

Mnemonics

AMEN/MEAN

• A: acoustic neuroma (a.k.a. vestibular schwannoma) (~80%)
• M: meningioma (~10%)
• E: ependymoma (~5%)
• N: neuroepithelial cyst (arachnoid/epidermoid) (~5%)

SAME

• S: schwannoma 
  • vestibular schwannoma much more common than a trigeminal schwannoma
• A: aneurysm, arachnoid cyst
• M: meningioma, metastasis
• E: epidermoid cyst, ependymoma

ANGLES

• A: aneurysm, arachnoid cyst
• N: (it's almost M) - meningioma, metastasis, medulloblastoma
• G: glioma (brainstem glioma)
• L: lymphoma
• E: ependymoma, epidermoid cyst
• S: schwannoma

See also

• contents of the cerebellopontine angle (CPA) cistern