Fig. 2

ROC curves of nomograms for prediction of different metastatic patterns of regional lymph nodes in patients intraoperatively diagnosed with esophageal cancer. a, regional lymph nodes. b, continuous regional lymph nodes. c, skipping regional lymph nodes in training cohort. d, regional lymph nodes. e, continuous regional lymph nodes. f, skipping regional lymph nodes in the validation cohort. ROC, receiver operating characteristic