Chang Young-Soo, Chung Sun-Yoon
Department of Otorhinolaryngology-Head and Neck Surgery, Sanggye Paik Hospital, Inje University College of Medicine, Seoul, Korea.
Department of Neurosurgery, CHA Bundang Medical Center, CHA University School of Medicine, Seongnam, 13496, Korea.
Acta Neurochir (Wien). 2025 May 16;167(1):142. doi: 10.1007/s00701-025-06517-4.
Aneurysms of the a2 segment of the anterior inferior cerebellar artery have a high incidence of nonsacullar morphology compelling parent artery occlusion (PAO) as treatment. Well-developed leptomeningeal collaterals and bypass surgery may reduce the occurrence of ischemic complications, but if PAO was made on the segment involving the origin of the internal auditory artery, complications are challenging to avoid. Few studies have clearly described the clinical course of neurologic deficits following PAO of a2 aneurysms. We report a case which recovered from audiovestibular loss and facial palsy after endovascular PAO of a ruptured a2 aneurysm and discuss indication of PAO.
小脑前下动脉A2段动脉瘤非囊状形态的发生率很高，迫使采用闭塞载瘤动脉（PAO）进行治疗。发育良好的软脑膜侧支和搭桥手术可能会减少缺血性并发症的发生，但如果在涉及内听动脉起源的节段进行PAO，则难以避免并发症。很少有研究清楚地描述A2段动脉瘤PAO后神经功能缺损的临床过程。我们报告了1例破裂的A2段动脉瘤血管内PAO后从听觉前庭丧失和面神经麻痹中恢复的病例，并讨论了PAO的适应证。
