Diagnostic utility of 20-megahertz linear endoscopic ultrasonography in early gastric cancer
Diagnostic utility of 20-megahertz linear endoscopic ultrasonography in early gastric cancer
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DOI：
10.1016/s0016-5107(96)70225-0
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发表时间：
1996-07-01
影响因子：
7.7
通讯作者：
Okita, K
中科院分区：
文献类型：
--
作者：
Yanai, H;Tada, M;Okita, K
背景资料：由于广泛的内镜治疗早期胃癌（EGG），准确的治疗前分期的EGC的浸润深度区分那些局限于粘膜内的癌症侵入粘膜下层已成为important.Methods：我们分期的肿瘤浸润深度的47个病变的EGC使用20 MHz的线性超声内镜（EUS）。结果：20 MHz超声内镜对粘膜或粘膜下层的分期准确率为72.3%。过度分期占19.1%，欠分期占2.1%，不确定性占6.4%。错误的主要原因是炎症与溃疡，良性囊性腺体在粘膜下层，和衰减的高频ultrasound beam.Conclusions：20 MHz EUS是有用的EGG治疗前分期。
Background: Because of the widespread endoscopic treatment of early gastric cancer (EGG), 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 EGG.