经放大电子结肠镜喷洒靛胭脂对结直肠小息肉的鉴别价值

目的 提高内镜下结直肠小息肉的检出率和正确诊断率。方法 经放大电子结肠镜喷洒靛胭脂地１２３的直径≤１０ｍｍ的息肉进行形态和组织学对照研究。结果 靛胭脂喷洒后增生性息肉表面呈规则星状乳头样小窝；腺瘤性息肉表面呈管状或树状状小窝。经放大肠镜喷洒色素诊断隆起型及扁平型小息肉，总符合率分别为８２．０％和７７．１％；鉴别腺瘤性从与非腺瘤性息肉敏感性和特异性，隆起型小息肉分别为８８．４％和９２．３％，扁平型小

Distinguishing colorectal minute lesions by highresolution video endoscope with indigo carmine dye spray

Objective The present study was aimed at evaluating the chromoscopy in detecting and distinguishing colorectal minute lesions (polyps). Methods Fujinon EC410 CM/HL magnifying endoscope with indigo carmine dye spray was used.Polyps10mm in diameter in 123 patients were studied morphologically and histologically. Results The outlook of stained hyperplastic lesions presented asteroid or papillary dots;that of the adenomatous showed tubular or branched pits .The diagnostic accuracies in macroscopic and microscopic views for protruded lesions and flat depressed ones were 82% and 77.1% respectively.While the sensitivity and specificity of the technique to distinguish protruded and flat adenoma from the nonadenomatous ones being 88.4%,92.3% and 83.3%,90.0% correspondingly. Conclusion With this technique minute polyps could be detected more frequently and their nature predicted more accurately.