Literature Review

Application of parallel stent placement in the treatment of unruptured vertebrobasilar fusiform aneurysms

  • In this study, eight unruptured vertebrobasilar fusiform aneurysms(VFAs) were treated with this parallel stent placement technique.
  • Only self-expandable stents were deployed without flow-diverter stent.
  • Twenty-five stents were placed for those eight cases (approximately 3 stents per case) without failure.
  • The clinical outcome of this study was recovered in most patients, the follow up angiograms showed that no cases obtained increasing size without thromboembolic complications.

The development of flow-diverter stents has provided innovative progress for intracranial aneurysmal treatment, particularly in the treatment of wide-necked, large and giant, or “nonsaccular” fusiform aneurysms. VFA is classified as “nonsaccular” fusiform aneurysm. Nevertheless, VFAs are well known as very difficult aneurysms to treat. This parallel stent placement technique may become one procedure for VFAs.

 This parallel stent placement technique is a creative and interesting procedure. I suppose that the concept of this procedure is not a flow-diversion but a reinforcement of the arterial wall. The concept of this procedure is different from the conventional treatment.