【摘要】 目的将内镜窄带成像技术(NBI)、染色内镜检查结果与病理学检查结果进行对比,探讨NBI在大肠息肉样病变诊断中的价值。方法选择2010年6月～2011年3月行结肠镜检查发现大肠息肉样病变的患者46例。分别采用常规模式、NBI模式及染色方法对病变进行黏膜表面细微腺管开口(pit)形态分型及微血管(CP)形态分型,与病理检查结果进行比较分析。结果在46例患者发现息肉样病变54个。NBI与普通内镜对病变轮廓、pit及CP图像清晰度比较差异均有显著性(P<0.01),NBI明显优于普通内镜。NBI与染色内镜对病变轮廓与CP的显示差异均有显著性(P<0.01),NBI优于染色内镜;两者在病变表面pit的观察方面差异无显著性(P>0.05)。NBI内镜下pit分型对大肠肿瘤性病变诊断的准确率、敏感性、特异性分别为90.7%、90.9%和90.0%,CP分型对大肠肿瘤性病变诊断的准确率、敏感性、特异性分别为92.6%、95.3%和81.8%。结论 NBI内镜能更为清晰地显示大肠息肉样病变轮廓、腺管开口及微血管形态;能较好地区分大肠肿瘤与非肿瘤性病变;操作转换简单易行。更多还原

【Abstract】 【Objective】 To evaluate the efficacy of narrow band imaging(NBI) in diagnosis of colorectal polypoid lesions.【Methods】 46 patients with colorectal polypoid lesions detected by colonoscopy were enrolled in the study from June 2010 to March 2011.They were observed with conventional colonoscopy,NBI and chromoendoscopy.These lesions were classified by pit pattern(pit) and capillary pattern(CP),which was assessed by reference to histopathology.【Results】 Fifty four colorectal polypoid lesions were found in 46 patients.For the observation of visualization of silhouette,pit and CP,NBI was better than ordinary endoscope(P <0.01).There was significant difference between NBI and chromoendoscopy in visualization of silhouette and CP(P <0.01).However,no significant difference was detected between 2 methods in pit(P >0.05).The diagnostic accuracy rate,sensitivity and specificity of pit in NBI were 90.7%,90.9%,90.0%,respectively.The diagnostic accuracy rate,sensitivity and specificity of CP were 92.6%,95.3%,81.8%,respectively.【Conclusions】 NBI can show the changes of silhouette of colorectal polypoid lesions,pit and CP clearly and distinguish neoplasm from non-neoplasm colorectal polypoid lesions.it was very ease to operate.更多还原