Revascularization of the anterior cerebral artery with an A3-A3 anastomosis and a superficial temporal artery bypass using an A3-radial artery graft to trap a giant anterior communicating artery aneurysm: Technical case report

OBJECTIVE AND IMPORTANCE: How to manage the distal anterior cerebral artery (ACA) circulation in the treatment of a giant anterior communicating artery aneurysm or a giant azygous A2 aneurysm is still controversial. CLINICAL PRESENTATION: We are reporting the case of a 70-year-old man who presented with an evolving giant thrombosed anterior communicating artery aneurysm. INTERVENTION: He was successfully treated by trapping the aneurysm in conjunction with an A3-A3 side-to-side anastomosis and a superficial temporal artery bypass using an A3-radial artery graft. The postoperative angiography showed an excellent filling of all the bilateral distal ACA area through the bypass. CONCLUSION: In cases in which direct clipping to preserve distal ACA flow is quite difficult, the bilateral ACA revascularization described here should be considered as another possibility.