Tsuchigame T, Mitsuzaki K
Department of Radiology, Kumamoto University School of Medicine.
Nihon Igaku Hoshasen Gakkai Zasshi. 2000 Aug;60(9):500-7.
Endoscopic mucosal resection (EMR) has been widely employed as a minimally invasive surgical procedure for early digestive cancers. Moreover, many recent reports emphasize the usefulness of endoscopic ultrasonography (EUS) for diagnosis of early gastrointestinal cancers. Generally, the normal gastrointestinal wall is visualized as having five layers by endosonographic probes of 7.5, 12, or 20 MHz. Delineation of these layers is the most important point for feature of EUS. Only mucosal cancers that are disclosed as hypoechoic masses within the first to second layer are indicated for EMR. The development of further extracorporeal applications such as color Doppler, 3-D, and aspiration biopsy EUS will contribute to the increased use of EUS in the near future.
内镜黏膜切除术（EMR）已被广泛用作早期消化道癌的微创手术。此外，最近许多报告强调了内镜超声检查（EUS）在早期胃肠道癌诊断中的作用。一般来说，通过7.5、12或20MHz的超声探头，正常胃肠道壁可显示为五层。这些层次的划分是EUS特征的最重要点。只有在第一至第二层内显示为低回声肿块的黏膜癌才适合进行EMR。诸如彩色多普勒、三维和细针穿刺活检EUS等进一步体外应用的发展将有助于在不久的将来增加EUS的使用。
