Li Y, et al. - Experts conducted a meta-analysis to evaluate the diagnostic value of diffusion-weighted imaging (DWI) in distinguishing between renal malignant and benign lesions. From January 2000 through January 2018, electronic databases were systematically searched to identify original studies evaluating DWI findings on renal lesions. The findings from the present study suggested that DWI is an informative MRI modality in distinguishing benign and malignant lesions and shows moderately high diagnostic accuracy. They identified reference standard, country, and gradient factor as the most important variable sources.