Fig. 2
From: Factors predicting recurrence after curative resection for rectal cancer: a 16-year study
Kaplan-Meier curves comparing the recurrence-free survival of the patients according to the four parameters independently associated with the risk of recurrence after curative surgery. a Distal margin (log-rank = < 10− 3). b Extracapsular invasion of lymph node metastasis (log-rank = 0.015). c Tumor stenosis (log-rank = 0.016). d Parietal invasion according to the TNM classification (log-rank = 0.016)