Aneurysm, arteriovenous malformation and arteriovenous fistula in posterior fossa compression syndrome.

To discuss the problem of neuroradiological preoperative procedures in patients with therapy-resistant facial pain, we present 3 case examples of vascular processes in the cerebellopontine angle (aneurysm, arteriovenous malformation, arteriovenous fistula). The microsurgical treatment in combination with artificial embolization is described. The vascular causes of microvascular compression at the root entry zone of the trigeminal nerve and malformations involving the nucleus caudalis are reviewed.