According to a randomized trial comparing 3 cycles of ECF (epirubicin, cisplatin, 5FU) administered before surgery and 3 cycles after surgery with surgery alone in adenocarcinoma of the stomach and lower esophagus, clinical and experimental data are the neoadjuvant chemotherapy is a new standard treatment for operable gastric cancer. This treatment with a median survival of more than 3 years to obtain a hazard ratio of 0.75 in favor of chemotherapy arm (p = 0.009). The 5-year survival being 36% for patients treated with chemotherapy versus 23% for surgery alone. Progression-free survival was also significantly prolonged with a hazard ratio of 0.66.