A3-A3 side-to-side anastomosis in the anterior communicating artery aneurysm surgery: report of four cases.

BACKGROUND

Giant or large aneurysms prevent direct clipping without compromise of the parent vessels, and any countermeasures should be attempted.

METHODS

We describe an A3-A3 side-to-side anastomosis as a method of revascularization of the pericallosal artery in surgery of an aneurysm of the anterior communicating artery (ACoA) in four patients.

RESULTS

In two patients with the pericallosal artery narrowed or occluded by the clipping or trapping procedure, and in two other patients with giant aneurysms clipped with prolonged duration of temporary occlusion of the parent vessels, no serious neurologic changes were observed after surgery.

CONCLUSIONS

We believe that an A3-A3 side-to-side anastomosis is effective in preventing ischemic complications in the territory of the pericallosal artery.