目的 研究并探讨在直肠息肉内镜切除术前行超声内镜检查的应用价值。方法 选取我院2015年8月-2017年6月期间 经普通肠镜检查发现的90例直肠息肉患者作为研究对象，所有患者均接受超声内镜检查，分析直肠息肉的超声内 镜检查结果，判断直肠息肉性质、深度和血管情况，再根据超声内镜中直肠息肉深度对患者进行内镜切除或外科 手术切除，将切除组织送病理检查，以术后病理诊断结果作为金标准，计算超声内镜对直肠息肉性质的诊断灵敏 度、特异度、准确性、阳性预测值、阴性预测值，并计算超声内镜对直肠息肉恶性病变T分期的诊断符合率，分析 超声内镜对直肠息肉蒂部和周边黏膜下血管分布的诊断结果。结果 超声内镜对直肠息肉性质的诊断灵敏度、特异 度、准确性、阳性预测值、阴性预测值分别为97.50%、100.00%、97.78%、100.00%、83.33%，其诊断结果与术后病 理诊断结果之间的一致性良好。超声内镜对直肠息肉恶性病变T分期(T1a期、T1b期、T2期、总计)的诊断符合率分 别为83.33%、100.00%、75.00%、83.33%，其对直肠息肉蒂部和周边黏膜下血管分布的诊断符合率分别为96.61%、 95.74%。结论 直肠息肉内镜切除术前行超声内镜检查可对直肠息肉的性质、侵袭深度、血管分布情况进行明确， 其诊断准确性高，有利于为患者制定科学合理的治疗方案，以改善其预后。

Objective To study and explore the application value of endoscopic resection in rectal polyps Endoscopic ultrasonography. Methods In our hospital from August 2015 June-2017 year period by colonoscopy in 90 cases with rectal polyps were found as the object of study, all patients underwent ultrasound endoscopy, endoscopic ultrasonography analysis results of rectal polyps and judge the rectal polyps nature, depth and vessels, according to a depth of ultrasound in rectal polyps Endoscopic resection or surgical resection for patients, the removed tissues were sent for pathological examination, the postoperative pathological diagnosis results as the gold standard, calculation of EUS diagnosis sensitivity, on the nature of the rectal polyp specificity, accuracy, positive predictive value, negative predictive value, and calculation of endoscopic ultrasonography for rectal polyps malignant lesions T staging diagnosis coincidence rate, analysis of endoscopic ultrasonography for straight intestinal polyp pedicle The diagnosis distribution of blood vessels and surrounding mucosa. Results The diagnostic sensitivity of endoscopic ultrasonography for rectal polyps nature of the specificity, accuracy, positive predictive value, negative predictive value were 97.50%, 100%, 97.78%, 100%, 83.33%, the consistency between the results of the diagnosis and postoperative pathological diagnosis results. Endoscopic ultrasonography for rectal polyps malignant lesions staging (stage T1a, T T1b, T2, total) rate was 83.33%, with 75%, 83.33%, 100% diagnosis, the diagnosis of vascular distribution of rectal polyp pedicle and surrounding mucosa under coincidence rate was 96.61%, 95.74%. Conclusion Endoscopic resection of rectal polyps Endoscopic ultrasonography can be on the nature, depth of invasion of rectal polyps. The distribution of vessels were clear, the high diagnostic accuracy, conducive to the development of scientific and reasonable treatment for patients, in order to improve the prognosis.