Endoscopic ultrasonography of superficial esophageal cancers using a thin ultrasound probe system equipped with switchable radial and linear scanning modes^{, ,}

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• 作者：Hideo Yanai ; Tomoharu Yoshida ; Toshiya Harada ; Yusuke Matsumoto ; Makoto Nishiaki ; Toshinori Shigemitsu ; Masahiro Tada ; Kiwamu Okita ; Toyokazu Kawano ; Susumu Nagasaki
• 刊名：Gastrointestinal Endoscopy
• 出版年：1996
• 出版时间：November 1996
• 年：1996
• 卷：44
• 期：5
• 页码：578-582
• 全文大小：7199 K

文摘

Background:Detailed information on the depth of invasion of superficial esophageal cancer is required for endoscopic mucosal resection. As a pretherapeutic diagnostic procedure, endoscopic ultrasonography using conventional 7.5 MHz systems has been ineffective at providing sufficient details. A newly developed, thin ultrasound probe system provides both radial and linear scanning for evaluation of superficial esophageal cancer. Methods:Endoscopic ultrasonography was performed in 16 patients using a switchable probe driven at 20 MHz. Seventeen lesions of superficial esophageal cancer were evaluated for depth of invasion to discriminate mucosal from submucosal penetration. Results:The overall accuracy of staging was 64.7 % . In all six errors, mucosal cancers were overstaged as submucosal invasion. The diagnostic accuracy was 80 % when the muscularis mucosae was visualized. Conclusion:A 20 MHz linear-radial switchable probe is a useful new method in the staging of superficial esophageal cancer. (Gastrointest Endosc 1996;44:578-82.)