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Endoscopic imaging techniques for detecting early colorectal cancer

机译：用于检测早期结直肠癌的内窥镜成像技术

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Purpose of review The detection of early colorectal cancer has improved notably since the introduction of bowel cancer screening programmes. This has created new challenges from endoscopic, histological and therapeutic perspectives. Here, we outline the limitations of current clinical practice and ways of implementing optical diagnosis to overcome these limitations. Recent findings Virtual chromoendoscopy without magnification for predicting or ruling out deep submucosal invasion is useful in real clinical practice for most lesions. However, magnifying virtual chromoendoscopy is needed to make an accurate diagnosis in nonulcerated narrow-band imaging international colorectal endoscopic (NICE) type 3 lesions or NICE type 2 lesions with depressed areas or of nodular mixed type. Finally, dye-based magnifying chromoendoscopy is needed in Japanese NBI Expert Team 2B lesions assessed with magnifying virtual chromoendoscopy. A four-step strategy is proposed, combining white-light assessment, virtual chromoendoscopy without magnification, virtual chromoendoscopy with magnification and dye-based chromoendoscopy with magnification.
机译：审查的目的是早期结直肠癌的检测显着提高了肠癌筛查计划的引入。这从内窥镜，组织学和治疗角度产生了新的挑战。在这里，我们概述了当前临床实践的局限性和实现光学诊断的方法以克服这些限制。最近的发现虚拟微透视无倍率预测或排除深度粘膜侵袭可用于大多数病变的真实临床实践中有用。然而，需要放大的虚拟微型透视检查在非抑制窄带成像国际结肠直肠内镜（漂亮）3型病灶或漂亮2型病变中进行准确诊断，或者具有抑制区域或结节混合类型。最后，日本NBI专家团队2B病变中需要基于染料的放大透视镜检查，该疗程评估了放大虚拟透视镜检查。提出了四步策略，将白光评估，虚拟透视无放大，虚拟染色体镜检查具有倍率和染料的染色镜检查，倍率为倍率。

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