=====Incidental neoplasia=====
A systematic review of 16 studies in 19 559 patients reported the prevalence of incidental neoplastic brain findings in [[MRI]] studies as 0.7% with the prevalence of [[glioma]] at 0.05%
((Morris Z, Whiteley WN, Longstreth WT, Weber F, Lee Y-C, Tsushima Y, et al. Incidental findings on brain magnetic resonance imaging: systematic review and meta-analysis. BMJ. 2009;339:b3016.)).