• Tae Keun Jee, Taek Min Nam, Je Young Yeon, Keon Ha Kim, Pyoung Jeon, Jong-Soo Kim, and Seung-Chyul Hong.
• Department of Neurosurgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea.
• World Neurosurg. 2020 Apr 1; 136: e214-e222.

BackgroundDespite its relative rarity, the potential for loss of productive years makes aneurysmal subarachnoid hemorrhage (SAH) a considerably important entity in young adult patients (20-39 years of age). This study aimed to analyze outcomes of microsurgery (MS) and endovascular treatment (EVT) for saccular intracranial aneurysms (IAs) in young adult patients.MethodsA total of 276 young adult patients with 315 IAs, treated with MS or EVT between January 2001 and December 2015, were studied. Major recurrence and treatment-related complications were the primary outcome measures. Functional outcomes in patients with SAH were also assessed.ResultsMajor recurrence occurred in 21 cases (6.7%). Younger age (adjusted hazard ratio [aHR], 3.77; 95% confidence interval [CI], 1.45-9.83; P = 0.007), ruptured IA (aHR, 6.44; 95% CI, 2.09-19.89; P = 0.001), size (aHR, 1.84; 95% CI, 1.06-3.18; P = 0.030), and EVT (aHR, 7.21; 95% CI, 2.44-21.35; P < 0.001) were independently related to major recurrence. Treatment-related complications occurred in 5 cases (1.6%) and did not differ between the MS and EVT groups (P > 0.999). Unfavorable outcomes (modified Rankin scale score ≥2) were identified in 30 patients (19.6%) with SAH, and only Hunt and Hess grade was independently associated with unfavorable functional outcome.ConclusionsBoth MS and EVT are safe for treating IAs in young adult patients. MS showed better durability of treatment and may be preferred over EVT in young patients in view of their longer life expectancy compared with older patients.Copyright © 2019. Published by Elsevier Inc.

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