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As apparent from the title, Safety and Occlusion Rates of Surgical Treatment of Unruptured Intracranial Aneurysms—A Systematic Review and Meta-analysis of the Literature from 1990 to 2011, Kotowski et al 1 performed a meta-analysis of 60 studies that included 9845 patients and 10 845 unruptured aneurysms treated surgically between 1990 and 2011 and evaluated safety and occlusion rates. They found morbidity and mortality rates of 6.7% and 1.7%, respectively. The authors limited the articles reviewed to studies published since 1990 because of a variety of factors including technological advances. We agree with the authors' decision. Indocyanine green video angiography and retractorless microsurgery are two such …
Competing interests None.
Provenance and peer review Commissioned; internally peer reviewed.
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