Cerebellopontine cistern

The cerebellopontine cistern (also pontocerebellar cistern, cerebellopontine angle cistern, or angle cistern) is a paired subarachnoid cistern at the cerebellopontine angle, an angle created between the cerebellum and the pons on either side. Each cerebellopontine cistern is continuous anteromedially with the pontine cistern.

The cistern contains the (ipsilateral) trigeminal nerve (CN V), facial nerve (CN VII), and vestibulocochlear nerve (VIII), the anterior inferior cerebellar artery, and superior petrosal vein.