胃癌是我国高发的恶性肿瘤之一,多数患者在确诊时巳为中晚期,故临床手术患者多为进展期胃癌。近些年随着人们健康意识的不断增强,对于胃癌的篩查更加重视,临床上早期胃癌(early gastric cancer,EGC)越来越多的发现。EGC是由日本内镜学会于1962年首次提出,其定义为病变局限于黏膜或黏膜下层,无论病灶大小及是 Gastric cancer is one of the most common malignant tumors in our country. Most of the patients have been in the advanced stage at the time of diagnosis. Therefore, most of the patients with clinical surgery are advanced gastric cancer. In recent years, with the continuous improvement of people’s health awareness, more attention has been paid to screening of gastric cancer, and more and more discoveries have been made on clinical early gastric cancer (EGC). The EGC was first proposed by the Japanese Society of Endoscopy in 1962 and was defined as lesions localized to the mucosa or submucosa regardless of the size of the lesion and