目的 研究与分析放大内镜在内镜下黏膜剥离术（ESD）治疗食管早期癌及癌前病变中的作用。方法 选取2020年1月—2022年7月我院收治的明确诊断为食管癌的患者为观察对象,研究者为其一级亲属40岁以上经普通内镜发现食管异常病灶同时行放大内镜检查者。据疑病处食管黏膜上皮乳头内毛细血管袢（IPCL）变化,判断病变性质估计侵犯深度。疑早期食管癌及癌前病变者行ESD治疗,疑进展期食管癌者行外科手术治疗,送整体标本病理检查。结果 食管癌一级亲属40岁以上患者经普通内镜发现食管异常病灶同时行放大内镜检查者共128例,其中行ESD和外科手术取得整体病理标本102例。对比放大胃镜术前判断和术后整体病理标本,判断性质方面放大内镜对食管早期病变诊断的总体准确率为87.3%,诊断食管早期鳞癌的灵敏度为97.8%,特异度为15.4%,阳性预测值88.8%,阴性预测值50%。判断浸润层次方面,放大内镜对食管早期鳞癌深度诊断的总体准确率为69%,B1型血管对浸润深度正确诊断率为90.6%,灵敏度为70.6%,B2型血管对浸润深度正确诊断为32.2%,灵敏度为76.9%,B3型血管对浸润深度正确诊断为66.7%,灵敏度为33.3%。结论 放大内镜在ESD下治疗食管早期鳞癌及癌前病变患者,可对食管病变性质准确判断,提升病变检出率,实践价值较高。

Objective To investigate and analyze the role of magnifying endoscopy in endoscopic submucosal dissection（ESD）in the treatment of early esophageal cancer and precancerous lesions．Methods Esophageal cancer patients in our hospital from January 2020 to July 2022 were selected as the observation objects,the investigator was a first-degree relative over 40 years old who found abnormal esophageal lesions through ordinary endoscopy,and underwent magnifying endoscopy,according to suspected esophageal mucosal epithelial nipple capillary loop（IPCL）changes,defined the nature of the lesion to estimate the invasion depth．Patients with suspected early esophageal cancer and precancerous lesions were given ESD treatment,and those with suspected progressive esophageal cancer underwent surgical treatment,and were sent to the whole specimen for pathological examination．Results A total of 128 patients with first-degree relatives of esophageal cancer over 40 years old were found to have simultaneous enlarged endoscopy simultaneously through common endoscopy,among which 102 patients had obtained overall pathological specimens by ESD and surgery．Comparing the preoperative diagnosis of magnifying gastroscopy and the postoperative overall pathological specimens,the overall accuracy of magnifying endoscopy for the diagnosis of early esophageal lesions was 87.3%,the sensitivity of detecting early esophageal squamous cell carcinoma was 97.8%,specificity was 15.4%,the positive predictive value was 88.8%,and the negative predictive value was 50%．In terms of invasion level,the overall accuracy of magnifying endoscopy for the depth diagnosis of early esophageal squamous cell carcinoma was 69%,90.6% accuracy and 70.6% sensitivity of B1 vessels,32.2% and 76.9% of B2 vessels,66.7% and 33.3% of B3 vessels．Conclusions The magnifying endoscopic treatment of patients with early esophageal cancer and precancerous lesions under ESD can accurately diagnosis the nature of esophageal lesions,improve the detection rate of lesions,and has high practical value．

       目的   分析早期结直肠癌内镜下治疗前行窄带成像结合放大内镜 （ME-NBI）和超声内镜技术的评估价值。方法   采用回顾性分析方法，以2021年1月— 2023 年 12月中山市第五人民医院收治的102例早期结直肠癌患者为观察对象，所有患者均接受内镜下黏膜切除术（EMR）或内镜黏膜下剥离术（ESD）治疗，根据内镜下治疗前是否进行ME-NBI和超声内镜检查分为研究组与对照组各51例。比较两组年龄、性别、肿瘤大小、直乙结肠占比及组织病理特征；比较两组治疗时间、ESD治疗后非治愈性切除发生率、治愈性切除率、并发症发生情况及再次ESD或外科手术治疗率。结果   两组年龄、性别、肿瘤大小、直乙结肠占比及组织病理比较差异均无统计学意义（P＞0.05）。研究组中37例行ESD治疗，治疗时间为（120.6±140.3）min，12例行EMR治疗，治疗时间为（11.6±9.3）min，有2例不符合内镜下治疗指征，转外科手术治疗。对照组有38例行ESD治疗，治疗时间为（128.8±144.5）min，13例行EMR治疗，治疗时间为（12.5±9.5）min，两者治疗时间比较差异均无统计学意义（P＞0.05）。研究组非治愈性切除率为7.84，低于对照组27.45；治愈性切除率为88.24，高于对照组72.55；研究组ESD手术并发症为8.11%，低于对照组31.58；ESD或外科手术率为6.12，低于对照组25.49（P＜0.05），结论  ME-NBI和超声内镜对早期结直肠癌患者行内镜下治疗指征评估更准确，可提高治愈性切除率。

       Objective  To  study the application value of magnifying endoscopy combined with  narrow  band imaging （ME-NBI）and ultrasonic endoscopy system before endoscopic treatment in patients with early colorectal cancer．Methods  A retrospective analysis was carried out on  102  patients with early-stage colorectal cancer who were admitted to Zhongshan Fifth People’s Hospital from January 2021 to December 2023．All patients were treated with endoscopic mucosal resection（EMR）or endoscopic submucosal dissection（ESO）．The patients were divided into study group（51 cases）and control group（51 cases）according to whether ME-NBI and ultrasonic endoscopy was performed before endoscopic treatment or not．The patient age，sex，volume of tumor，location of tumor and pathological result of the tumor were compared between two groups．Time for treatment，curative resection rate，non-curative resection rate and the complication incidence of ESD，incidences of second ESD or surgery were compared between the two groups．Results  There were no statistical differences in age，sex，volume of tumor，location of tumor and pathological result of the tumor（P＞0.05）．In the study group，37 patients received ESD treatment，operation time was（120.6±140.3）minutes，and 12 patients received EMR treatment，operation time was（11.6±9.3）minutes，two cases were transferred to surgery due to endoscopic ultrasonography combined with magnifying endoscopy showed that they did not meet the indications for ESD treatment．In the control group，38 patients received ESD treatment，operation time was（128.8±144.5）minutes，13 patients received EMR treatment，operation time was（12.5±9.5）minutes．There was no significant difference in treatment duration between the two groups．The non-curative resection rate of the study group was 7.84%，which was significantly lower than that in the control group（27.45%），and the curative resection rate（88.24%）was significantly higher than that in the control group（72.55%）．The complications of ESD surgery in the study group were 8.11%，lower than 31.58% in the control group．The rate of second ESD or surgery was 6.12%，lower than 25.49% in the control group（P＜0.05）．Conclusions  ME-NBI and endoscopic ultrasound are more accurate in the evaluation of endoscopic indications for early colorectal cancer patients，and can improve the curative resection rate．