The Diagnostic Value Of Endoscopic Ultrasound In Esophageal Cancer Preoperative Staging

Objective: To investigate the clinical value of endoscopic ultrasonography inpreoperative diagnosis and staging of esophageal cancer.Methods：Collect46cases of esophageal cancer which have diagnosed by routinegastroscopy and pathological, then received the endoscopic ultrasonography beforesurgery and did the preoperative TNM staging, and compared with postoperativepathologic results.Results：（1）The diagnosis accuracy rates were77.1%for T stage with preoperationalEUS of esophageal carcinoma, furthermore the sensitivity, specificity and accuracy ofthe stage T1were60.0%,97.5%,93.4%respectively; the sensitivity, specificity andaccuracy of the stage T2were66.7%,87.5%,84.7%respectively; the sensitivity,specificity and accuracy of the stage T3were78.5%,72.2%,76.1%respectively; thesensitivity, specificity and accuracy of the stage T4were57.1%,94.8%,89.1%respectively. Each T stage of esophageal EUS preoperative and postoperativepathological had no significant statistical difference between groups (T1:P>0.05；T2:P>0.05；T3: P>0.05；T4: P>0.05).（2）The diagnosis accuracy rates were69.6%for N stage with preoperational EUS ofesophageal carcinoma, furthermore the sensitivity, specificity and accuracy of the stageNOwere80.0%,61.5%,69.6%respectively; the sensitivity, specificity and accuracy ofthe stage N1were61.5%,80%,69.6%respectively. Each N stage of esophageal EUSpreoperative and postoperative pathological had no significant statistical difference between groups (NO：P＞0.05；N1：P＞0.05).（3）The Kappa values for preoperative EUS in T and N stage,as well as postoperativepathological in T and N stage were good (0.4＜Kappa value＜0.7).Conclusion：The accuracy rate of EUS in T stage were higher for diagnosis inesophageal cancer preoperative staging. EUS has a certain guiding significance foresophageal cancer in developing treatment strategies,and in choosing surgicalapproach,and in estimating prognosis after surgery.