共聚焦显微内镜对胃黏膜萎缩伴肠上皮化生的诊断价值

目的：研究共聚焦内镜（CLE）下胃黏膜萎缩的形态学特征,探讨其对伴有肠上皮化生诊断的可行性及准确性。方法：应用CLE对42例既往患有胃黏膜萎缩伴肠上皮化生的患者首先行胃镜检查,对黏膜可疑病变处行CLE扫描,分别给出内镜诊断和共聚焦活体组织学诊断。对扫描部位进行黏膜活检,分别对内镜诊断、共聚焦内镜诊断与病理组织学诊断进行对比分析。结果：CLE扫描42例患者获得7200帧图像,清晰显示胃小凹结构、柱状上皮细胞、杯状细胞、细胞周围结缔组织和微血管网图像。胃黏膜萎缩表现为单位视野内腺体数目减少、胃小凹间隙增宽;肠化腺体中的杯状细胞具有特殊的形态特征,易于识别。与病理结果对照研究显示：普通内镜诊断的敏感度、特异度及准确率分别为44%、16%和28%;共聚焦内镜敏感度、特异度及准确率分别为88%、87%和88%。结论：共聚焦显微内镜是一种全新的诊断工具,可以在内镜检查同时进行活体的虚拟组织学诊断,是诊断胃黏膜萎缩及胃黏膜肠上皮化生的一种有用的新方法。

Diagnostic value of confocal laser endomicroscopy for gastric mucosa atrophy with intestinal metaplasia

Objective:To study the morphological characteristics of gastric mucosa atrophy under confocal laser endomicroscope(CLE) and the possibility and accuracy of CLE in diagnosis of gastric mucosa atrophy accompanying intestinal metaplasia in vivo.Methods:A total of 42 patients with a history of gastric mucosa atrophy accompanying intestinal metaplasia(IM) underwent routine endoscopy and CLE,respectively.Images obtained from each site were stored and samples were obtained at the same location for biopsies.The end...