Neurological Surgery No Shinkei Geka Volume 46, Issue 3 (March 2018)

Blister-like Aneurysm Originating from the Anterior Communicating Artery:A Case Report Tomohiro ABIKO 1 , Katsuya SAITO 1 , Makoto MURASE 1 , Hideyuki TOMITA 1 1Department of Neurosurgery, Ashikaga Red Cross Hospital Keyword: subarachnoid hemorrhage , blister-like aneurysm , anterior communicating artery , wrapping , spontaneous healing pp.207-212
Published Date 2018/3/10
  • Abstract
  • Look Inside
  • Reference

 Blister-like aneurysms(BLA)are morphologically thin-walled fragile structures that are associated with a high risk of intraoperative rupture. BLAs presumably originate from an arterial dissection and often stem from a non-branching site on the supraclinoid segment of the internal carotid artery. We report a rare case of a patient who was successfully treated for a ruptured BLA originating from the anterior communicating artery(Acom). A 60-year-old woman presented with severe headache and loss of consciousness. Computed tomography(CT)showed diffuse subarachnoid hemorrhage(SAH), which was observed to be particularly dense in the interhemispheric fissure around the Acom. CT angiography and three dimensional-digital subtraction angiography(DSA)did not show any aneurysms along the Acom. Follow-up DSA performed on day 13 showed a small aneurysmal dilatation of the Acom, which was surgically treated via interhemispheric approach. Intraoperatively, a BLA observed to be originating from the Acom was wrapped with a piece of temporal fascia using fibrin glue. Postoperatively, this patient showed a good clinical course without re-rupture. Follow-up DSA performed 5 months after the occurrence of the SAH demonstrated disappearance of the BLA originating from the Acom.

 The findings in this patient strongly suggest that the pathomechanism of BLAs is attributable to an arterial dissection, which can often show morphological changes on short-term angiographic follow-up, and they demonstrate spontaneous repair. Thus, the therapeutic strategy to be utilized for the management of a BLA of the Acom should be carefully considered, because aneurysmal neck clipping or trapping can injure the Acom perforators and cause cognitive deficits. Further studies are needed to establish the optimal treatment strategy for the management of BLAs of the Acom.

Copyright © 2018, Igaku-Shoin Ltd. All rights reserved.


Neurological Surgery 脳神経外科
46巻3号 (2018年3月)
電子版ISSN 1882-1251 印刷版ISSN 0301-2603 医学書院