Quality of Life After Billroth II or Roux-en-Y for Gastric Cancer

The realization of REY suggests an improvement of the HRQoL after distal gastric resection in comparison to the B2 anastomosis justifying the need of a RCT on the topic. Moreover, the REY could improve the gastro-intestinal symptoms and gastritis. The investigators hypothesize that the REY intervention after distal gastrectomy will improve HRQoL for 3 targeted dimensions of the EORTC QLQ-OG25 questionnaire (eating, reflux, pain and discomfort) in patients with gastric cancer.

All patients with a distal gastric cancer treated in curative intent by surgery with distal gastrectomy should be included. The choice of this population belongs in the fact that no reconstruction according billroth2 are performed for other gastric cancer requiring a total gastrectomy. Therefore, all patients treated by total gastrectomy need to be excluded. Secondly, the increase in survival of this population in the past decade araising to 75% at 5 years allows investigators to question the quality of life after surgery.

The anastomosis is realized with the proximal jejunum without entero-enterostomy in the first 70 cm after the angle of Treitz. The gastrojejunostomy could be ante-colic or trans-mesocolic. The anastomosis could be performed according the surgeon decision (mechanical or handsewn, isoperistaltic or anisoperistaltic).

The length of jejunum of the Y section needs to be at least 60 cm. The Roux-en-Y anastomosis could be antecolic or transmesocolic. The anastomosis could be realized according the surgeon decision (mechanical or handsewn, isoperistaltic or anisoperistaltic).

The choice between these two techniques will not add an increased risk to the patient since they are both recommended by national guidelines, they are both performed as standard care and there is no difference in Quality of Life at long term.

During surgery:

* A complete exploration of abdominal cavity is realized to avoid presence of peritoneal metastasis. This exploration is allowed by laparoscopy or open surgery * The gastric tumor permits to realize R0 resection with 5 cm of resection margin according to the subtotal gastric resection on the line between the right side of gastro-esophageal junction and the end of the left gastro-omental artery * In case of Linitis plastica, realization of anatomopathological examination of proximal margin without sign of tumoral involvement to access to randomization The type of surgery (B2 or REY) will be then determined by randomization

Interventions added for the research are:

* Randomization : the randomization will be realized by the investigator team * One endoscopy at 1 year of follow-up after surgery * Quality of Life questionnaires (EORTC QLQ-C30 and QLQ-OG25) at baseline, 3 months, 6 months, 1 year and 2 years of follow-up after surgery

Expected benefits for the participants: Improve HRQoL after distal gastrectomy. Patients will not be exposed to a specific risk as the two methods of reconstruction are described and used in the routine.

The design of the study (without excessive invasive exam) and the routine care monitoring associated to a better HRQoL evaluation compared to the "classic" post-operative follow-up of patient will help patient decision to participate to the study.

• Other EORTC QLQ-OG25 dimensions [Time frame: Baseline, 3 months, 6 months, 1 year and 2 years post-surgery]
• Other HRQoL dimensions [Time frame: Baseline, 3 months, 6 months, 1 year and 2 years post-surgery]
• Longitudinal changes of each HRQoL dimension [Time frame: The long-term HRQoL (EORTC QLQ-OG25 questionnaire) after surgery for gastric cancer at 2 years]
• Longitudinal changes of each HRQoL dimension [Time frame: et The long-term HRQoL (EORTC QLQ-C30 questionnaire) after surgery for gastric cancer at 2 years]
• The long-term HRQoL after surgery for gastric cancer at 2 years [Time frame: 2 years post-surgery]
• The long-term HRQoL after surgery for gastric cancer at 2 years [Time frame: 2 years post-surgery]
• The post-operative morbidity rates at 90 days [Time frame: 90 days post-surgery]
• The post-operative morbidity rates at 1 year [Time frame: 1 year post-surgery]
• The endoscopic biliary reflux rate and gastritis at 1 year post surgery [Time frame: 1 year post-surgery]
• The rate of proton pump inhibitor (PPI) use at 3 months, 6 months, 1 year and 2 years post-surgery [Time frame: 3 months, 6 months, 1 year and 2 years post-surgery]
• The survival at 1 year [Time frame: 1 year post-surgery]
• The survival at 2 years [Time frame: 2 years post-surgery]