title: How I do it: side to side posterior inferior cerebellar artery – posterior inferior cerebellar artery bypass procedure.
abstract: BACKGROUND
  An intracranial in situ side to side posterior circulation procedure is performed infrequently. The scope of treatment modalities of vertebral artery-PICA aneurysms and vertebral dissections is limited due to the lack of many representations of this procedure's technical nuances.
  
  
  METHODS
  To demonstrate the technical nuances of a PICA-PICA side to side bypass in a 50-year-old woman with a dissecting vertebral-PICA junction pseudoaneurysm.
  
  
  CONCLUSIONS
  Details of the pre-operative evaluation, decision process and operative nuances of side to side PICA-PICA bypass are described. Indications and limitations are emphasized. Vascular neurosurgeons should consider this elegant procedure in their treatment armamentarium.
authors.forename: Amir R
authors.initials: AR
authors.lastname: Dehdashti
mesh_terms: D000714:Anastomosis, Surgical / Q000379:methods; D001921:Brain / Q000098:blood supply*; D002533:Cerebral Angiography / Q000379:methods; D002548:Cerebral Revascularization / Q000379:methods; D005260:Female; D006801:Humans; D002532:Intracranial Aneurysm / Q000601:surgery*; D008875:Middle Aged; D019635:Neurosurgical Procedures / Q000379:methods; D016896:Treatment Outcome; D014711:Vertebral Artery / Q000601:surgery*