148 Background: The risk of death for gastric cancer in Colombia is lightly higher for 2013 compared to 1998. Even though Risaralda has an irregular pattern for the risk of death, it was also higher compared to 1998, for these reasons the survival analysis was made with the information of gastric cancer patients treated in Oncólogos del Occidente clinic during 2014. Methods: A cohort study was made whose exposure is the treatment of gastric cancer. The time variable is the interval between the first medical appointment and the final control, interview or date of death, and the outcome makes reference to a death attributable to cancer gastric or surviving. The source of the cases were the clinical histories found in SAHICO data base, of the patients attended in the clinic Oncólogos del Occidente, to make univariate and bivariate analysis using Stata software. Results: There were 173 patients, from which 69.9% were male; the age group with highest incidence was 60 to 69 years old group (32.2%); 21.38% of the patients had family members with gastric cancer and 53.1% were diagnosed during advanced stages (III-IV). As far as the survival analysis, it was 207 days long, lessen if the patient only receives palliative treatment (122 days long) and increasing if surgery, chemotherapy and radiotherapy were done (252 days long). Conclusions: In a national and international level, the epidemiological data correlates with the findings in this study; with respect to the diagnosis, in Colombia, it is made during advanced stages, meanwhile in developed countries the diagnosis is made during earlier stages because of the screening tests. The oncological surgery increased the patient’s survival, also for the patients who underwent surgery when they received chemotherapy or radiotherapy.