Study on Indications of "Bard" PowerPort Isp Implantable Port

For esophageal cancer patients,chest CT could provide more accurate staging information and eliminated operation that could not achieve R0 resection such as T4 disease. However, the variation image quality was usual encountered because of contrast medium was injected via peripheral vein. Power injectable port could provide a secure vascular access as administration route for contrast medium via central vein. This could provide higher intravascular contrast medium concentration and could lead better image quality. This study divided into two arms, one group planned to receive power injectable port and another received conventional port. The aim of study was tried to identified the image differences between different contrast medium administration route and the its survival impact of esophageal cancer.