Fig. 2From: The effects of prophylactic cranial irradiation versus control on survival of patients with extensive-stage small-cell lung cancer: a meta-analysis of 14 trialsCombined effects of PCI versus control with regard to OS, PFS, and risk of brain metastasis. a, Forest plot showing the synthesized HR of PCI vs. control for OS in extensive-stage SCLC; b, Forest plot showing the synthesized HR of PCI vs. control for PFS in extensive-stage SCLC; c, PCI reduces the risk of brain metastasis in extensive-stage SCLCBack to article page