Fig. 4From: Prognostic and clinicopathological significance of circulating tumor cells detected by RT-PCR in non-metastatic colorectal cancer: a meta-analysis and systematic reviewSummary estimates of risk ratio for clinicopathological parameters associated with CTCs-positive. a Regional lymph nodes metastasis; b Depth of infiltration; c Vascular invasion; d Tumor grade; e TNM stage (Stage I, II vs. Stage III); f Tumor sizeBack to article page