Cerebellopontine angle cistern

The cerebellopontine angle (CPA) cistern, also known as the pontocerebellar cistern, is a triangular CSF-filled subarachnoid cistern that lies between the anterior surface of the cerebellum and the lateral surface of the pons.

Gross anatomy

  • CN V lies superior to this space
  • CN IX, CN X, and CN XI lie inferior
  • the middle cerebellar peduncle is inferior

Related pathology

Anatomy: Brain

Anatomy: Brain

Article information

rID: 43489
Section: Anatomy
Synonyms or Alternate Spellings:
  • Pontocerebellar cisterns
  • Cerebellopontine angles
  • Pontocerebellar cistern
  • CPA
  • Cerebellopontine angle
  • CPA cistern

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