Fig. 4 Kaplan-Meier analysis

（a） In the comparative study of the existence of positive lymph node metastasis and the survival rate obtained using single thin-slice CT,（b） In the comparative study of the existence of positive lymph node metastasis and the survival rate obtained using thin-slice CT/DWI,（c） In lymph node metastasis-negative group according to the thin-slice CT/DWI diagnosis. Comparative study of the existence of positive lymph node metastasis in the histologically and the survival rate