병변이 내시경 절제술로 완전 절제되었기 때문에 추가적인 항암 화학 치료나 방사선 치료 없이 외래에서 추적 관찰하였다.
Since the lesion was completely resected by endoscopic resection, the patient was followed up in the outpatient clinic without additional chemotherapy or radiotherapy.