Surgical Treatment of Two Simultaneous De Novo Para-Anastomotic Aneurysms Following Side-to-Side Bypass of Anterior Cerebral Artery: A Technical Case Instruction

Le résumé fourni par la source

BACKGROUND AND IMPORTANCE: Anterior cerebral artery aneurysms requiring bypass are rare; thus, the literature regarding the subsequent pathology related to the procedure is severely lacking. Hence, there is no consensus regarding the management strategy. The progressive enlargement of de novo para-anastomotic aneurysm carries a higher rupture risk of this abnormal vessel. The peculiar location, related vascular territory, and small corridor of interhemispheric fissure pose challenges to its management. CLINICAL PRESENTATION: We present a 70-year-old woman with two simultaneous de novo para-anastomotic aneurysms after an A3-A3 bypass. Previously, she had an A3-A3 bypass and aneurysm trapping of left A2 dissecting aneurysm 7 years ago. On routine follow-up imaging, she had progressive enlargement of two aneurysm-liked lesions on top of anastomosis vessels. She underwent a modified trapping and superficial temporal artery-anterior cerebral artery bypass with excellent clinical outcome and no recurrence. CONCLUSION: Managing de novo aneurysm formation after in situ A3-A3 bypass is challenging. Complex procedures are required to secure the aneurysm from circulation and ensure its vascularization at the distal site. Long-term follow-up is necessary for all bypass procedures.

Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.