Abstract
Background and Aims: Limited data from multicenter prospective studies is available regarding the long-term outcomes of endoscopic resection (ER) for gastric cancer, particularly for EGC lesions fulfilling differentiated-type, pT1b (SM1), ≤3 cm. A Japanese multicenter prospective cohort study of ER for early gastric cancer (EGC) using a Web registry system (J-WEB/EGC) has been conducted to determine the long-term outcomes (Clinical Trial Registration: UMIN000005871). We aimed to clarify the long-term outcomes of ER for EGCs based on pathological curability of gastric ER to determine the effectiveness of ER for EGC.
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