1Cantero R. Palliative treatment of esophageal cancer: Self-expanding metal stents versus pos technique[J]. Hepatogastroenterology, 1999, 46(26):971-976.
6Frimberger E.Expanding spiral:a new tupe of prosthesis for the palliative treatment of malignant esophageal stenosis[J].Endoscopy,1983,15:213-214.
7Park KB,Dl YS,Kang WK,et al.Malignant obstruction of gastric outlet and duodenum:palliation with flexible covered metallic stents[J].Radiology,2001,219:679-683.
8Song HY,Jung HY,Kim SB,et al.Covered retrievable expandable Nitinol stents in patients with benign esophageal strictures:initial experience[J].Radiology,2000,217:551-557.
9Hong Suk Park,Yong Soo Do,Soo Won Wuh,et al.Upper gastrointestinal tract malignant obstruction:initial results of palliation weth a flexible covered stent[J].Radiology,1999,210:865-870.
10Fleischer D,Sivak M.Endoscopic Nd:YAG laser therapy as palliation for esophagogastric carcinoma[J].Gastroenterology,1985,89:827-831.
