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对于直径<1 cm局限于粘膜下的直肠类癌采用常规的息肉切除术难以完全切除,作者采用双管结肠镜治疗较小直肠类癌,并对其临床价值进行了评估。 方法:使用双管结肠镜,该镜有两个机械性管道,左右直径分别为3.2和2.8mm,在结肠镜下经两个机械管道一抓钳和一热透圈套器进人直肠腔,将已通过圈套器环的抓钳钳夹住肿瘤拖人肠腔,置圈套器于肿瘤基底部周围,紧紧套扎并用电凝切除肿瘤。作者曾于1985～1992年间使用常规单管结肠镜对7例病人的7个类癌行内镜切除,1993年开始采用双管结肠镜对9例病人中的10个类癌施行切除。
For patients with rectal carcinoid tumors less than 1 cm in diameter limited to submucous mucosa, it is difficult to perform complete resection with conventional polypectomy. The authors used double colonoscopy to treat small rectal carcinoid tumors and evaluated their clinical value. Methods: Using double colonoscopy, the mirror has two mechanical channels, the left and right diameters are 3.2 and 2.8mm respectively. Under the colonoscope, two mechanical pipes, a grasping forceps and a heat penetration snare device enter the rectal cavity, and the The tumor has been clamped by the clamp of the snare loop and the snare is placed around the base of the tumor. The snare is tightly ligated and the tumor is removed by electrocoagulation. The authors used conventional single-tube colonoscopy to perform endoscopic resection of seven types of cancers in 7 patients from 1985 to 1992. In 1993, double colonoscopy was used to remove 10 types of cancers in 9 patients.