title: Endovascular treatment of a true posterior communicating artery aneurysm.
abstract: BACKGROUND
  Posterior communicating artery (PCoA) aneurysms are most commonly located at the junction of the internal carotid artery and the PCoA. "True" PCoA aneurysms, which originate from the PCoA itself, are rarely encountered. Most previously reported cases were treated surgically mainly before the endovascular option became available.
  
  
  METHODS
  A 53-year-old male presented with sudden onset of right hemiparesis and aphasia. Left middle cerebral artery stroke was diagnosed. Further studies revealed a 3 mm left PCoA aneurysm arising from the PCoA itself, attached to neither the internal carotid artery nor the posterior cerebral artery. Endovascular treatment was performed and the aneurysm was coiled completely.
  
  
  CONCLUSIONS
  Technical advances in endovascular interventional technology have permitted an additional approach to these lesions. The possible endovascular significance of the treatment of true PCoA aneurysms is discussed.
authors.affiliation: Department of Neurosurgery, "12 de Octubre" University Hospital, Complutense University of Madrid, Madrid, Spain.
authors.forename: Pablo M
authors.initials: PM
authors.lastname: Munarriz
authors.affiliation: Department of Neurosurgery, "12 de Octubre" University Hospital, Complutense University of Madrid, Madrid, Spain.
authors.forename: Ana M
authors.initials: AM
authors.lastname: Castaño-Leon
authors.affiliation: Department of Neurosurgery, "12 de Octubre" University Hospital, Complutense University of Madrid, Madrid, Spain.
authors.forename: Santiago
authors.initials: S
authors.lastname: Cepeda
authors.affiliation: Division of Neuroradiology, "12 de Octubre" University Hospital, Complutense University of Madrid, Madrid, Spain.
authors.forename: Jorge
authors.initials: J
authors.lastname: Campollo
authors.affiliation: Department of Neurosurgery, "12 de Octubre" University Hospital, Complutense University of Madrid, Madrid, Spain ; Division of Neuroradiology, "12 de Octubre" University Hospital, Complutense University of Madrid, Madrid, Spain.
authors.forename: Jose F
authors.initials: JF
authors.lastname: Alén
authors.affiliation: Department of Neurosurgery, "12 de Octubre" University Hospital, Complutense University of Madrid, Madrid, Spain.
authors.forename: Alfonso
authors.initials: A
authors.lastname: Lagares
keywords: Cerebral aneurysm; endovascular coiling; posterior communicating artery aneurysm; true posterior communicating artery aneurysm