Fig. 2From: Transduodenal ampullectomy provides a less invasive technique to cure early ampullary cancerKaplan-Meier plot. a Survival curve between TDA group and PD group, survive rate was calculated by the Kaplan-Meier method, significant difference wasn’t found between the two groups (P = 0.927). b Overall survival rate in PD group according to the lymph node status, patients without LN metastasis (N-)had better prognosis than these with LN metastasis (N+) (P = 0.014)Back to article page