在双重内镜下用粘膜活检切除法切除4例病变,性质如下:粘膜内早期胃癌1例(Ⅱc型),重度不典型增生1例,Peutz—Jeghers综合征的胃息肉1例和粘膜下肿瘤1例(二者为Yamada Ⅰ型),4例病变均小于2cm。未见严重的并发症。早期胃癌者内镜下切除后7天又行根治性胃切除,切除的胃标本病理检查显示内镜癌灶切除干净,无癌细胞残存。不典型增生者术后随访6周,内镜下活检未再有不典型增生的改变。内镜下粘膜切除术 The mucosal biopsy was used to remove 4 lesions under dual endoscopy. The characteristics were as follows: 1 case of early gastric cancer in the mucosa (IIc type), 1 case of severe dysplasia, 1 case of gastric polyp of Peutz-Jeghers syndrome and submucosal tumors. In 1 case (both Yamada I), 4 lesions were less than 2 cm. No serious complications were seen. Radical gastrectomy was performed 7 days after endoscopic resection of early gastric cancer. Pathological examination of the resected gastric specimen showed that the endoscopic resection was clean and no cancerous cells remained. After 6 weeks of follow-up after atypical hyperplasia, there was no change in dysplasia after endoscopic biopsy. Endoscopic mucosal resection