20兆赫线性内镜超声检查在早期胃癌中的诊断效用
Diagnostic utility of 20-megahertz linear endoscopic ultrasonography in early gastric cancer.
作者信息
Yanai H, Tada M, Karita M, Okita K
机构信息
First Department of Internal Medicine, Yamaguchi University School of Medicine, Ube, Japan.
出版信息
Gastrointest Endosc. 1996 Jul;44(1):29-33. doi: 10.1016/s0016-5107(96)70225-0.
BACKGROUND
Because of the widespread endoscopic treatment of early gastric cancer (EGC), accurate pretherapeutic staging of the invasion depth of EGC differentiating those limited within the mucosa from cancers invading the submucosa has become important.
METHODS
We staged the depth of tumor invasion of 47 lesions of EGC using 20 MHz linear endoscopic ultrasonography (EUS). The EUS probe was introduced via the instrument channel of a standard endoscope.
RESULTS
The accuracy of 20 MHz EUS in staging the mucosa or submucosa was 72.3%. There was 19.1% overstaging, 2.1% understaging, and 6.4% indeterminant. The principal causes of errors were inflammation associated with ulcers, benign cystic glands in the submucosal layer, and attenuation of the high-frequency ultrasound beam.
CONCLUSIONS
20 MHz EUS is useful in the pretherapeutic staging of EGC.
背景
由于早期胃癌（EGC）内镜治疗的广泛应用，准确区分局限于黏膜层的EGC与侵犯黏膜下层的癌症的术前浸润深度分期变得至关重要。
方法
我们使用20MHz线性超声内镜（EUS）对47例EGC病变的肿瘤浸润深度进行分期。EUS探头通过标准内镜的器械通道插入。
结果
20MHz EUS对黏膜或黏膜下层分期的准确率为72.3%。存在19.1%的过度分期、2.1%的分期不足以及6.4%的不确定情况。误差的主要原因是与溃疡相关的炎症、黏膜下层的良性囊性腺体以及高频超声束的衰减。
结论
20MHz EUS在EGC的术前分期中有用。
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