title: Usefulness of Motor-Evoked Potentials Monitoring for Neurosurgical Treatment of an Unusual Distal Anterior Choroidal Artery Aneurysm.
abstract: A 35 years old woman presented with an acute meningeal syndrome following an intra ventricular haemorrhage without subarachnoid haemorrhage. The angiography demonstrated a 6 mm partially thrombosed saccular aneurysm at the plexal point of the right anterior choroidal artery (AChoA). It was surgically approached inside the ventricle through a trans-temporal corticotomy. The aneurysm was excised after distal exclusion of the feeding artery under motor-evoked potentials monitoring. Of the 19 cases of distal AChoA aneurysm neurosurgical treatment, this is the only one performed under electrophysiology monitoring, a simple and safe method to detect and prevent motor tract ischemia. We discuss this rare case, along with a comprehensible review of the literature of the previous surgical cases of distal AChoA aneurysms.
authors.affiliation: Department of Neurosurgery, Institute of Neurological Sciences, Southern General Hospital, United Kingdom.
authors.forename: Charles
authors.initials: C
authors.lastname: Champeaux
authors.affiliation: Department of Neurosurgery, University Hospital of Bordeaux, Pellegrin Hospital, Bordeaux Cedex, France.
authors.forename: Vincent
authors.initials: V
authors.lastname: Jecko
authors.affiliation: Department of Neuropathology, University Hospital of Bordeaux, Pellegrin Hospital, Bordeaux Cedex, France.
authors.forename: Sandrine
authors.initials: S
authors.lastname: Eimer
authors.affiliation: Department of Neurosurgery, University Hospital of Bordeaux, Pellegrin Hospital, Bordeaux Cedex, France.
authors.forename: Guillaume
authors.initials: G
authors.lastname: Penchet
keywords: Anterior choroidal artery; Cerebral aneurysm; Intra ventricular haemorrhage; Motor evoked potentials; Neurosurgical treatment