目的 研究超声内镜(EUS)对结直肠癌(CRC)术前分期和指导手术方案的应用价值。方法 选取我院2014年11月—2015年11月结直肠外科收治的52例CRC患者,均接受根治性切除术治疗并经术中病理观察确诊,并以手术病理TNM分期结果作为金标准。术前对入选患者行超声内镜检查,参考金标准回顾性分析超声内镜的TNM分期诊断效果。结果 该52例CRC患者EUS诊断结果显示肿瘤侵犯浸润T分期(T1～T4)准确率分别为87.50%、80.00%、94.12%、83.33%,较手术病理金标准无差异(P>0.05);EUS诊断淋巴结转移N分期(N0～N2)准确率分别为76.92%、79.17%、86.67%,其中N0、N2准确率较金标准无差异(P>0.05),但N1分期准确率较金标准偏低(P<0.05)。结论 虽然ENS对淋巴结转移程度尤其是N1的诊断准确度存在一定误差,但从整体来看EUS能较好的观察CRC患者肿瘤侵犯浸润深度和判断淋巴结转移情况,术前结合EUS诊断结果有利于患者术前病理分期,并为选择合适的手术方案提供参考依据。

Objective To study the application value of endoscopic ultrasonography (EUS) in preoperative staging of colorectal cancer (CRC) and guidance of surgical procedures. Methods 52 cases of patients with CRC who were admitted in the department of colorectal surgery of our hospital from November 2014 and November 2015 were selected. All of them underwent radical resection and were confirmed by surgical and pathological observation. Surgical and pathological TNM staging results were taken as golden standard. Before surgery, endoscopic ultrasonography was performed in the selected patients. Referring to the gold standard, TNM staging diagnostic effects of endoscopic ultrasonography were retrospectively analyzed. Results The EUS diagnostic results of 52 patients with CRC showed that the accuracy rates of tumor invasion T stage (T1-T4) were 87.50%, 80.00%, 94.12% and 83.33% respectively. There was no significant difference, compared with surgical and pathological golden standard (P>0.05); The accuracy rates of EUS in diagnosis of lymph node metastasis N stage (N0-N2) were 76.92%, 79.17% and 86.67%, respectively. There was no significant difference in accuracy rate in N0 and N2, compared with the gold standard (P>0.05), but the accuracy in N1 stage was lower than that of gold standard (P<0.05). Conclusion Although ENS has some errors in the diagnosis of degree of lymph node metastasis, especially N1, on the whole, EUS can be better to observe the depth of tumor invasion and lymph node metastasis in patients with CRC. The diagnosis combining with EUS before surgery is helpful to the preoperative pathological staging, and provide reference for the selection of appropriate surgical procedures.

       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．