Objective Our study aimed to evaluate the prognostic and clinicopathological significance of pretreatment mean platelet volume (MPV) on cancer by using meta-analysis of published studies. Design Meta-analysis. Data sources Relevant studies available before 22 December 2019 were identified by searching MEDLINE. EMBASE. https://www.roneverhart.com/Sweet-life-2-5ml-Vape-Cartridges-Infused-with-Live-Resin-HHC-P-THC-P-Pineapple-Express-Hybrid/