Gastric cancer still has one of the highest incidence rates worldwide. Screening programs have been established in high incidence regions, especially in Asia, but in the West, screening for gastric cancer is not generally recommended. Gastroscopy is the gold standard for diagnosing gastric cancer. For the treatment of early gastric cancer, endoscopic resection is the method of choice. With the ESD technique, larger lesions can be resected en-bloc. Guideline and extended guideline criteria for the choice of lesions for ESD have been evaluated extensively, initially in Asia and later in the West as well. For lesions which are out of indication, a surgical approach must be recommended. To detect early recurrence or metachronous lesions, follow-up should be performed after ER.

胃癌仍然是世界范围内最高的发病率之一。已经在高发地区建立了筛查计划，特别是在亚洲，但是在西方国家，一般不建议筛查胃癌。胃镜检查是诊断胃癌的金标准。对于早期胃癌的治疗，选择内镜下切除术是可行的。借助ESD技术，可以将大的病灶整体切除。ESD病变选择的指南和扩展指南标准已得到广泛评估，最初在亚洲，后来在西方也进行了评估。对于无指征的病变，必须建议手术方法。为了发现早期复发或异时性病变，应在ER后进行随访。