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Risk Factors of Acoustic Neuroma: Systematic Review and Meta-Analysis
Xiujue Zheng,Mantao Chen,Zuoxu Fan,Fei Cao,Liang Wang 연세대학교의과대학 2016 Yonsei medical journal Vol.57 No.3
Purpose: Many epidemiological studies have investigated environmental risk factors for the development of acoustic neuroma. However, these results are controversial. We conducted a meta-analysis of case-control studies to identify any potential relationshipbetween history of noise exposure, smoking, allergic diseases, and risk of acoustic neuroma. Materials and Methods: We searched PubMed to identify relevant articles. Two researchers evaluated the eligibility and extracted the data independently. Results: Eleven case-control studies were included in our meta-analysis. Acoustic neuroma was found to be associated with leisurenoise exposure [odds ratio (OR)=1.33, 95% confidence interval (CI): 1.05–1.68], but not with occupational noise exposure and ever noise exposure (OR=1.20, 95% CI: 0.84–1.72 and OR=1.15, 95% CI: 0.80–1.65). The OR of acoustic neuroma for ever (versus never) smoking was 0.53 (95% CI: 0.30–0.94), while the subgroup analysis indicated ORs of 0.95 (95% CI: 0.81–1.10) and 0.49 (95% CI: 0.41–0.59) for ex-smoker and current smoker respectively. The ORs for asthma, eczema, and seasonal rhinitis were 0.98 (95% CI: 0.80–1.18), 0.91 (95% CI: 0.76–1.09), and 1.52 (95% CI: 0.90–2.54), respectively. Conclusion: Our meta-analysis is suggestive of an elevated risk of acoustic neuroma among individuals who were ever exposed to leisure noise, but not to occupational noise. Our study also indicated a lower acoustic neuroma risk among ever and current cigarettesmokers than never smokers, while there was no significant relationship for ex-smokers. No significant associations were found between acoustic neuroma and history of any allergic diseases, such as asthma, eczema, and seasonal rhinitis.