Diagnosis of subepithelial tumors in the upper gastrointestinal tract by endoscopic ultrasonography

作     者：Hiroki Sakamoto Masayuki Kitano Masatoshi Kudo 

作者机构：Division of Gastroenterology and HepatologyDepartment of Internal MedicineKinki University School of MedicineOsaka-Sayama 589-8511Japan 

出 版 物：《World Journal of Radiology》 (世界放射学杂志（英文版）（电子版）)

年 卷 期：2010年第2卷第8期

页      面：289-297页

学科分类：1002[医学-临床医学] 100214[医学-肿瘤学] 10[医学] 

基　　金：Supported by The Japan Society for Promotion of Science Research and Development Committee Program of The Japan Society of Ultrasonics in Medicine Japan Research Foundation for Clinical Pharmacology and Japanese Foundation for Research and Promotion of Endoscopy 

主　　题：Endoscopic ultrasonography Submucosal tumor Subepithelial tumor 

摘      要：Endoscopic ultrasonography(EUS) is the most accurate procedure for detecting and diagnosing subepithelial tumors,due to its higher sensitivity and specificity than other imaging *** can characterize lesions by providing information on echogenic origin,size,borders,homogeneity,and the presence of echogenic or anechoic *** echoendoscopes,and recently also electronic radial echoendoscopes,can be used with color Doppler or power Doppler to assess the vascular signals from subepithelial masses,and thus permit the differentiation of vascular structures from cysts,as well as the assessment of the tumor blood ***,the diagnostic accuracy of EUS imaging alone has been shown to be low in subepithelial lesions with 3rd and 4th *** is also difficult to differentiate exactly between benign and malignant tumors and to gain an accurate picture of histology using *** the other hands,EUS guided fine needle aspiration(EUS-FNA) can provide samples for cytologic or histologic *** lesions of the 3rd and the 4th EUS layers,more than in 1 cm diameter are recommended,and histologic confirmation using endoscopic submucosal resection or EUSFNA should be obtained when ***,EUSFNA plays an important role in the clinical management of subepithelial *** improvements in endoscopic technology are expected to be more useful modalities in differential diagnosis and discrimination between benign and malignant subepithelial