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Kaplan-Meier survival curves for patients with oesophageal cancer according to perioesophageal lymph node metastasis. (A) Survival curves according to histological diagnosis. (B) Survival curves according to endoscopic ultrasonography (EUS) findings. There was a significant difference between positive and negative lymph node metastasis ((A) p<0.001, (B) p=0.0021).
