Intraoperative decision-making in thrombectomy for bilateral cerebral embolism: a mimic of thrombus migration

This study thoroughly examines the challenges in managing bilateral embolization, emphasizing intraoperative judgment. It aims to underscore the necessity of accurate etiological judgments and the limitations of cross-circulation thrombectomy. A 59-year-old male with hypertension and atrial fibrillation developed sudden limb twitching, progressing to limb paralysis and speech impairment. Neurological assessments identified multiple symptoms, while a head CT scan excluded intracranial hemorrhage. A mechanical thrombectomy revealed occlusions in the right internal cerebral artery (ICA) and left middle cerebral artery (MCA). Thrombus migration from the ICA terminus was misinterpreted as an escape from the anterior communicating artery, leading to unsuccessful thrombus retrieval. This study highlights the infrequency of bilateral embolic infarctions and intraoperative misjudgments arising from thrombus migration during thrombectomy. It underscores the limitations of cross-circulation thrombectomy and emphasizes a comprehensive risk–benefit analysis. The insights provided deepen the comprehension of thrombus migration patterns and inform strategies for bilateral embolism, focusing on optimal revascularization techniques.