Using Radkowski staging, one, two, one, one, and three tumors were stage Ia, IIa, IIb, IIc, and IIIa lesions, respectively. All the tumors were removed successfully by strictly endoscopic surgery. No complications associated with the operation occurred. The average follow-up was 54 months. One recurrence (14.3%) occurred in this series and the salvage surgery was performed by second curative endoscopic procedure.
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