Tham T, et al. - Authors probed the association between the Red Cell Distribution Width (RDW) and prognosis in upper aerodigestive tract (UADT) cancer. They searched PubMed (via the web), Embase, Scopus, and the Cochrane Library. To generate the pooled hazard ratios (HR) for overall survival (OS), disease specific survival (DSS), and recurrence free survival (RFS), a systematic review and meta-analysis was conducted. High heterogeneity was seen in the disease-specific survival result and 95% CI was not pooled. Findings suggested that in certain populations an elevated RDW could be an indicator of poor prognosis in UADT cancers.