Patients treated with S-1 therapy had a better prognosis than patients without S-1. One metastatic site and being given second-line chemotherapy were other factors for better prognosis. For patients with only one metastatic site, a good prognosis can be obtained by second-line chemotherapy for those refractory to S-1. The prognosis of patients who had more than two metastatic sites remained poor; more effective chemotherapy might improve the survival of such patients if they retain good performance status.
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