改良的圈套器行内镜黏膜下剥离术切除结直肠息肉及黏膜下肿瘤的疗效评价

目的探讨改良的圈套器行内镜黏膜下剥离术(ESD)切除结直肠息肉及黏膜下肿瘤的安全性、有效性。方法回顾性研究2014年12月-2016年5月利用改良的圈套器完成ESD切除结直肠息肉、神经内分泌肿瘤(NETs)和间质瘤患者的临床资料,探讨改良的圈套器进行ESD术治疗结直肠病变的安全性、有效性、治疗时间和并发症等,并与HOOK刀完成ESD术进行比较。结果共20例病例24处入选并完成ESD术,其中16例病例共20处病灶均顺利完成改良的圈套器行ESD术(实验组),4例病灶采用传统HOOK刀完成ESD术(对照组)。两组手术成功率均为100.0%,病灶整块切除率100.0%(24/24);实验组息肉长径为1.2~4.0 cm,平均长径(2.4±0.9)cm,对照组息肉长径为1.5~3.0 cm,平均长径(2.2±0.6)cm;实验组手术时间为45.0~120.0 min,平均时间(83.3±23.9)min,对照组手术时间45.0~80.0 min,平均时间(66.2±15.4)min,与对照组比较,实验组耗时长,差异具有统计学意义(P=0.038)。术后病理:结直肠腺瘤15例(其中3例腺瘤伴局部腺体高级别上皮内瘤变),增生性息肉1例,高级别上皮内瘤变1例,NETs 2例共4处病灶,间质瘤1例,两组中除1例来源于固有肌层间质瘤全层切除术以外,无1例出现出血、穿孔、感染等并发症,无1例术中、术后转外科治疗。结论改良的单圈套器能够安全、有效地完成ESD术切除巨大结直肠息肉及黏膜下肿瘤,拓展了圈套器在内镜切除术中的使用方法及适应证,但需要更长时间来完成手术。

Clinical evaluation of endoscopic submucosal dissection with improved snare for colorectal polyps and submucosal tumors*

Objective?To evaluate the therapeutic effectiveness and safety of endoscopic submucosal dissection (ESD) with improved snare for colorectal polyps and submucosal tumors.?Methods?The clinical data such as clinical pathological characteristics, en bloc resection rate, curative resection rate, complications and follow-up results of 20 patients with colorectal polyps or submucosal tumors, who were treated by ESD, were retrospectively analyzed.?Results?20 patients (total 24 lesions) with colorectal polyps or submucosal tumors were performed ESD operation successfully, in which 16 cases (total 20 lesions) were treated by ESD with improved snare (the trial group), 4 cases were treated by ESD with HOOK knife (the control group).The surgical success rate was 100.0% (24/24), the en blot resection rate was 100.0% (24/24). The mean polyps diameter in the trial group was (2.4 ± 0.9) cm (1.2~4.0 cm), while that in the control group was (2.2 ± 0.6) cm (1.5~3.0 cm). The mean procedure time in the trial group was (83.3 ± 23.9) min (45.0~120.0 min), while the control group was (66.2 ± 15.4) min (45.0~80.0 min), compared with the control group, the trial group need more times to complete the operation. The postoperative pathology as follows: 15 cases were adenoma (including 3 cases of adenoma with partial gland high-grade intraepithelial neoplasia), 1 case was hyperplastic polyp, 1 case was high-grade intraepithelial neoplasia, 2 cases were neuroendocrine tumor (total 4 lesions) 1 case was stromal tumor. Except for 1 case of stromal tumor from the muscularis propria was taken full thickness resection, no patient appeared complications such as hemorrhage, perforation, infection. No patient need intraoperative and postoperative surgical treatment.?Conclusion?Improved snare can be used to endoscopic submucosal dissection for large colorectal polyps and submucosal tumors safely and effectively, expanded the use and indications of snare in endoscopic resection, but need more times to completed the operation.