3Weavera SR,Blackshawa GR,Lewis WG,et al.Comparison of special interest computed tomography,endosonography and histopathological stage of oesophageal cancer.Clinical[J].Glin Radiol,2004,59(6):499~504.
4Schirmer CC,Osvaldt AB,Gurski RR,et al.Efficacy of computed axial tomography in the evaluation of the involvement of the respiratory tract in patients with squamous cell carcinoma of esophagus[J].Dis Esophagus,1999,12(3):196~201.
6Tio TL,Cohen P,Coene PP,et al.Endosonography and computed tomography of esophageal carcinoma:Preoperative classification compared to new TNM system[J].Gastroenterology,1989,96(6):1478~1486.