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Comparison of Kaplan-Meier overall survival (OS) curves; (A) OS and recurrence-free survival (RFS) of all patients, (B) OS and RFS of patients with cT1a lesions after endoscopic resection, (C) OS and (D) RFS of patients with cT1b lesions according to the treatment group.
CCRT, concurrent chemoradiotherapy; RT, radiotherapy.
