Xi KX, et al. - Tumor-stroma ratio (TSR) was assessed for prognostic utility in non-small cell lung cancer (NSCLC). As per the findings, TSR is a new prognostic factor for NSCLC. Longer disease-free period and better prognosis were found to be associated with stroma-poor tumors vs stroma-rich tumors. In the future, TSR may contribute to the development of individualized treatment for NSCLC.