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１７例经内镜检查疑有早期胃癌样病变而常规活检未明确的患者，经内镜作了全粘膜层剥离活检术（ＳＢ）．手术成功率为９４．１７％。关键是将可疑病灶置于镜下明视部位，注射针准确进入病灶粘膜下层并注入适量生理盐水使粘膜层与粘膜下层剥离隆起，经用圈套器将全层粘膜切割下。
Seventeen patients who had early gastric cancer-like lesions by endoscopy but did not have a regular biopsy had a total mucosal dissection (SB) by endoscopy. The success rate of surgery was 94.17%. The key is to suspicious lesions placed in the mirror under the site of vision, the injection needle accurately into the submucosa of the lesion and injection of appropriate amount of saline mucosal and submucosal peel off, the whole layer of mucosa by snare cutting.