Clinical oncology for pancreatic and biliary cancers:Advances and current limitations  

作　　者：Yoshiki Hirooka Akihiro Itoh Hiroki Kawashima Eizaburo Ohno Takuya Ishikawa Yuya Itoh Yosuke Nakamura Takeshi Hiramatsu Masanao Nakamura Ryoji Miyahara Naoki Ohmiya Masatoshi Ishigami Yoshiaki Katano Hidemi Goto 

机构地区：[1]Department of Endoscopy,Nagoya University Hospital,65,Tsuruma-Cho,Showa-Ku,Nagoya City,Aichi Prefecture 81-466-8550,Japan [2]Department of Gastroenterology,Nagoya University Graduate School of Medicine,65,Tsuruma-Cho,Showa-Ku,Nagoya City,Aichi Prefecture 81-466-8550,Japan

出　　处：《World Journal of Clinical Oncology》2011年第5期217-224,共8页世界临床肿瘤学杂志（英文版）

摘　　要：In the early 2000s,the main stream of endoscopic ultrasonography(EUS)changed from a mechanical scanning method to electronic radial or linear scanning methods.Subsequently,useful applications in trans-abdominal ultrasonography came within reach of EUS.In particular,contrast-enhanced EUS(CE-EUS)and EUS-elastography became cutting-edge diagnostic modalities for pancreatic disorders.Each type of pancreatic disorder has characteristic hemodynamics.CE-EUS uses color Doppler flow imaging and harmonic imaging to classify pancreatic lesions.EUS-elastography can assess tissue hardness by measuring its elasticity.This parameter appears to correlate with the malignant potential of the lesions.Tissue elasticity studies can provide information on both its pattern and distribution.The former is the conventional method of morphological diagnosis,but it is restricted to observations made in a region of interest(ROI).The latter is an unbiased analysis that can be performed by image analysis software and is theoretically constant,regardless of the ROI.Though EUSfine needle aspiration(FNA)is also a very useful diagnostic tool,there are several limitations.Diagnostic EUS-FNA of pancreatic cystic lesions has marginal utility mainly due to low sensitivity.Therefore,in particular,endoscopists should keep this limitation in mind.

关 键 词：Contrast-enhanced ENDOSCOPIC ULTRASONOGRAPHY ENDOSCOPIC ultrasonography-elastography ENDOSCOPIC ultrasonography-fine needle ASPIRATION PANCREATIC CYSTIC LESIONS Dissemination Track seeding Marginal utility for PANCREATIC CYSTIC LESIONS of ENDOSCOPIC ultrasonography-fine needle ASPIRATION 

分 类 号：R[医药卫生]