Efficacy of endovascular treatment of posterior cerebral dissecting artery aneurysms

Abstract

Objective To summarize the efficacy of endovascular treatment of posterior cerebral dissecting artery aneurysms. Methods The clinical data of 8 patients with posterior cerebral dissecting artery aneurysm treated with endovascular treatment at the Department of Neurosurgery, Zhujiang Hospital, Southern Medical University from January 2007 to January 2014 were analyzed retrospectively. Hunt and Hess grade: grade Ⅰ (n=3), grade Ⅱ (n=4), and grade Ⅲ (n=1). The aneurysm of 1 patient located at the P1 segment, 5 at the P2 segment, and 2 at the P3 segment. The aneurysm diameters ranged from 4 mm to 10 mm. Five patients underwent parent artery and aneurysm embolizations and 3 underwent stent-assisted coil embolization. Results Postoperative angiography showed that all the aneurysms were packed densely. In addition to one patient experienced the left limb muscle strength decrease, other patients did not have surgery-related complications. Eight patients were followed up for 6 to 12 months, and the aneurysm recurrence was not observed in 7 of them. One patient had aneurysm recurrence after being initially treated in other hospital. After his parent artery and aneurysm being occluded for 6 months in our hospital, DSA revealed the parent artery recanalization. Another 2 coils were inserted again for occluding the parent artery. His aneurysm reoccurred after 6 months and he refused to further treatment. After 12 months, the modified Rankin scale score was 0 in 7 patients and 1 in 1 patient. Conclusion Endovascular treatment of posterior cerebral dissecting aneurysm is safe and the short-term efficacy is better. Key words: Posterior cerebral artery; Endovascular procedures; Aneurysm, dissection