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Controversial results have been reported regarding the importance of the duodenal food passage after total gastrectomy. There are a number of experimental and clinical studies showing an advantage for the jejunal interposition between esophagus and duodenum. Others favor the Roux-en-Y reconstruction, as it is technically less demanding. The purpose of this study was the randomized comparison between two major reconstruction principles after total gastrectomy for gastric cancer (i.e., jejunal interposition with pouch versus Roux-en-Y pouch reconstruction). A group of 120 patients with gastric cancer were randomized and operated on during a 5-year period according to standardized operative protocols, using either a jejunal interposition with pouch (JIP) or the Roux-en-Y reconstruction with pouch (RYP). Endpoints of this study were operation time, intra- and postoperative problems and complications, patients' body weight, functional assessment, and quality of life. Of the 120 patients, 14 had to be withdrawn during the operation because only the Roux-en-Y reconstruction was technically possible. Finally, 53 patients with JIP were compared with 53 patients with RYP for the perioperative course. There were no significant differences between the two procedures (RYP and JIP) regarding complications (24.5% and 26.4%, respectively), mortality (3.8% and 1.9%, respectively), and operation time (4.35 hours and 4.40 hours, respectively). For long-term functional comparison 46 (RYP, n = 26; JIP, n = 20) patients were without recurrence after 3 years of survival. Comparison of body weight, Visick scoring, and the Spitzer Index also did not reveal any significant difference between the two operation methods.(ABSTRACT TRUNCATED AT 250 WORDS)