Management of Extracranial Carotid Artery Aneurysms: A 6-Year Case Series

Background: We discuss the presentation and management of extracranial carotid artery aneurysms (ECAAs) and to develop a new type of classification. Material/Methods: A retrospective review of 35 ECAAs patients who were admitted in our institution from January 2010 to June 2016 was conducted. The mean follow-up period was 25.58 +/- 22.13 months. Results: During the study period, 35 aneurysms were diagnosed and treated (mean age, 50.8 +/- 15.6 years; 15 men). There were 28 true aneurysms, 5 false aneurysms, and 2 dissecting aneurysms. A total of 16 patients with true aneurysms underwent open surgical treatment (group 1), whereas 15 received endovascular management, including all false and dissecting aneurysms (group 2). The remaining 4 true aneurysms were treated with hybrid operation (group 3). The patency rates of groups 1, 2, and 3 were 100%, 93.3%, and 100%, respectively. According to the Peking Union Medical College Hospital (PUMCH) Classification, all 24 cases of type Ia aneurysms were treated by either open surgery and/or endovascular treatment, whereas all 3 type Ib cases were treated solely by open surgery. All 5 type IIa patients were treated by endovascular treatment, with the exception of 1 failure that was transferred to hybrid operation. All 3 type IIb patients were treated by hybrid operation. Conclusions: Open surgery was more frequently feasible in true aneurysms, and endovascular surgery was the first choice for false and dissecting aneurysms. Hybrid operation was available for complicated cases. The PUMCH classification may be helpful for selection of management strategies for ECAAs.