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对16例19个大肠病变行EMR，经病理检查证实早期原位癌2例，腺瘤9例，粘膜赘生2例，息肉合并轻一中度不典型增生5例，重度不典型增生1例。结合结果及操作体会．对EMR操作的注意事项，治疗大肠早期癌及癌前病变的指征和价值作了探讨。
EMR was performed in 16 cases of 19 large intestine lesions. Pathological examination confirmed 2 cases of early carcinoma in situ, 9 cases of adenoma, 2 cases of mucosal dysplasia, 5 cases of polytypical dysplasia with mild to moderate dysplasia, and 1 case of severe dysplasia. . Combine results and experience. Attention was paid to the precautions of EMR operation and the indications and values for the treatment of early colorectal cancer and precancerous lesions.