Jai Ho Choi1, Kyung Il Jo2, Keon Ha Kim3,4, Pyoung Jeon5, Je Young Yeon2, Jong Soo Kim2, Seung Chyul Hong2. 1. Department of Neurosurgery, Bundang Jesaeng Hospital, Sungnam, Korea. 2. Department of Neurosurgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea. 3. Department of Radiology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea. somatom.kim@samsung.com. 4. Department of Interventional Neuroradiology, Samsung Medical Center, 50 Irwon-dong, Kangnam-gu, Seoul, Republic of Korea. somatom.kim@samsung.com. 5. Department of Radiology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea.
Abstract
INTRODUCTION: The purpose of this study was to evaluate morphological factors associated with rupture in anterior communicating artery (AcomA) aneurysms and to investigate the significance of AcomA fenestration as a risk factor for aneurysm rupture. METHODS: The clinical and radiologic findings of 255 patients with AcomA aneurysms treated with coil embolization between January 2005 and March 2014 were retrospectively reviewed. We performed univariate and multivariate analyses to evaluate the associations between morphological variables and rupture status. RESULTS: The number of patients with AcomA fenestration was 17 out of 255 (6.6 %). There were no statistically significant differences between the fenestration group and non-fenestration group in clinical and morphological characteristics. Multivariate logistic regression tests showed that superior direction of aneurysm dome (OR 2.802, p = 0.023), presence of a bleb (OR 5.998, p < 0.001), high aspect ratio (OR 3.138, p = 0.009), size greater than 7 mm (OR 3.356, p = 0.013), and AcomA fenestration (OR 4.135, p = 0.026) were significantly associated with AcomA aneurysm rupture. CONCLUSIONS: The results of this study demonstrated that a fenestrated AcomA is associated with risk of aneurysm rupture. Therefore, AcomA fenestration can be considered as an important morphological risk factor for rupture, along with other known risk factors such as the direction of aneurysm dome, a bleb, high aspect ratio, and size.
INTRODUCTION: The purpose of this study was to evaluate morphological factors associated with rupture in anterior communicating artery (AcomA) aneurysms and to investigate the significance of AcomA fenestration as a risk factor for aneurysm rupture. METHODS: The clinical and radiologic findings of 255 patients with AcomA aneurysms treated with coil embolization between January 2005 and March 2014 were retrospectively reviewed. We performed univariate and multivariate analyses to evaluate the associations between morphological variables and rupture status. RESULTS: The number of patients with AcomA fenestration was 17 out of 255 (6.6 %). There were no statistically significant differences between the fenestration group and non-fenestration group in clinical and morphological characteristics. Multivariate logistic regression tests showed that superior direction of aneurysm dome (OR 2.802, p = 0.023), presence of a bleb (OR 5.998, p < 0.001), high aspect ratio (OR 3.138, p = 0.009), size greater than 7 mm (OR 3.356, p = 0.013), and AcomA fenestration (OR 4.135, p = 0.026) were significantly associated with AcomA aneurysm rupture. CONCLUSIONS: The results of this study demonstrated that a fenestrated AcomA is associated with risk of aneurysm rupture. Therefore, AcomA fenestration can be considered as an important morphological risk factor for rupture, along with other known risk factors such as the direction of aneurysm dome, a bleb, high aspect ratio, and size.
Authors: H Lindekleiv; M S Sandvei; I Njølstad; M-L Løchen; P R Romundstad; L Vatten; T Ingebrigtsen; A Vik; E B Mathiesen Journal: Neurology Date: 2011-02-15 Impact factor: 9.910