探究血管腔内不同技术治疗未破裂肾动脉瘤的安全性和有效性。

回顾性分析2013年7月至2020年8月在南京医科大学第一附属医院行血管腔内治疗的24例未破裂肾动脉瘤患者的临床资料，观察不同介入技术治疗后动脉瘤腔的闭塞率和载瘤动脉的通畅情况。

24例患者共25枚肾动脉瘤均接受治疗，平均最大直径为（2.3 ± 1.0）cm，平均瘤颈为（0.8 ± 0.3）cm。采用双导管技术治疗18枚（双导管组），支架辅助弹簧圈栓塞7枚（支架组），两组的技术成功率均为100%。双导管组和支架组术后1、6、12个月临床成功率分别为100%、94.4%、94.4%和100%、100%、100%。术后6个月，双导管组1例患者出现无症状性小面积肾梗死，未发生其他严重并发症。随访期间两组均未发现动脉瘤复发和载瘤动脉闭塞。

血管内治疗肾动脉瘤安全有效，对于瘤颈较窄的肾动脉瘤可以采用双导管技术，或行支架辅助弹簧圈栓塞。

To assess the safety and efficacy of different endovascular techniques in the treatment of unruptured renal artery aneurysms.

The clinical data of 24 patients with renal artery aneurysms, who were treated with endovascular treatment in the First Affiliated Hospital of Nanjing Medical University from July 2013 to August 2020, was retrospectively analyzed by observing aneurysmal occlusion and patency of parent artery after different endovascular treatment for renal artery aneurysm.

A total of25 renal aneurysms were treated in 24 patients, with the mean maximum diameter of (2.3±1.0) cm and neck width of (0.8 ± 0.3) cm. The number of aneurysms treated with double microcatheter technique and stent-assisted embolization were 18 and 7 respectively. The technical success rate was both 100%. Postoperative 1-, 6- and 12-month clinical success rate of double microcatheter group and stent-assisted group were 100%, 94.4%, 95.8% and 100%, 100%, 100% respectively. Six months after therapy, small scale of asymptomatic renal infarction was discovered in one patient with double microcatheter technique and no major complication was recorded. There were no aneurysmal recurrences, occlusion of parent artery or deaths related to renal artery aneurysms during the follow-up.

Endovascular treatment is safe and effective for treating renal artery aneurysms. For renal aneurysms with narrow neck, double microcatheter technique could be chosen, otherwise, stent-assisted embolization should be performed.