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A comparative study of 43 patients with mirror-like intracranial aneurysms: risk factors, treatment, and prognosis

Authors Wang R, Zhang D, Zhao JZ, Wang S, Zhao YL, Niu HC

Received 2 July 2014

Accepted for publication 10 September 2014

Published 19 November 2014 Volume 2014:10 Pages 2231—2237

DOI https://doi.org/10.2147/NDT.S70515

Checked for plagiarism Yes

Review by Single-blind

Peer reviewer comments 2

Editor who approved publication: Professor Wai Kwong Tang

Rong Wang,1,* Dong Zhang,1,* Jizong Zhao,1 Shuo Wang,1 Yuanli Zhao,1 Hongchuan Niu2

1Neurosurgical Department, Beijing Tiantan Hospital affiliated to Capital Medical University, 2Capital Medical University, Beijing, People’s Republic of China

*These authors contributed equally to this work

Background and objective: Mirror-like intracranial aneurysms (MirAn) occur symmetrically at the corresponding intracranial arteries and are a subgroup of multiple intracranial aneurysms. The aim of this study was to analyze the risk factors, treatment, and prognosis of MirAn.
Methods: We retrospectively analyzed 43 cases of MirAn diagnosed between January 2000 and December 2009. The control groups comprised patients with non-mirror-like multiple aneurysms (nMirAn) and single aneurysms (SingAn). Sex, age, localization of MirAn, hypertension, diabetes, smoking, and rupture were identified as potential risk factors for MirAn.
Results: The male to female ratio of the MirAn patients was 1.0:5.1, which was significantly different from that of the nMirAn patients (1.0:1.9, P=0.037) and SingAn patients (1.0:1.3, P<0.001). There was no difference in age (P=0.8741), smoking (P=0.301), diabetes (P=0.267), or hypertension (P=0.874) between the MirAn and nMirAn patients. The aneurysms in 28 MirAn patients (65.1%) involved the internal carotid-posterior communicating arteries; in these patients, the rupture risk was significantly higher for larger aneurysms compared with smaller aneurysms (P<0.05).
Conclusion: More women suffered from MirAn than nMirAn or SingAn. The most common MirAn sites were the internal carotid-posterior communicating arteries. Our results suggest that MirAn was not associated with age, smoking, hypertension, or diabetes.

Keywords: women’s health, mirror-like intracranial aneurysm, retrospective analysis, clinical feature

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