Cerebellopontine angle mass (mnemonic)

Mnemonics for the common cerebellopontine angle masses include:

• AMEN or MEAN
• SAME

Mnemonics

AMEN

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

SAME

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

See also

For contents of the CPA cistern, see this article.