To draw attention to the increase in the frequency of endometrial cancer (CE) in recent decades and its association with overweight and obesity in a highly specialized institution. Retrospective study of patients with EC treated in the Oncology Service (OS) General Hospital of Mexico (GHM), in the years 2000 to 2017, obtaining information related to some risk factors and their classification. The data were compared with a previous study from the years 1966-1993. Of the record of 1,045 EC treated during the studied time of 44 years, 785 corresponded to the period 2000-2017 and 260 to the previous report, which meant an increase of 200% for this disease. Of gynecological cancers, the EC figures increased from 17.9% in 2010-2011 to 29.4% in 2016-2017 (p=0.0001). Overweight and obesity were in 572/785 (72.8%) of the current series vs. 120/260 (46.1%) of the previous series (p<0.05). An increase of 19% to 28% was found in women younger than 48 years when comparing the periods 2000 -2009 vs. 2010-2017 (p=0.011); 119/389 classified as stage I, (30.5%) had risk factors for tumor recurrence and 378/898 (42.0%) had advanced malignancies. An increase in CE reported in this series and its association with overweight and obesity, may highlight the public health problem that this association represents in our country.

e18059 Background: Information technologies, such as Internet, have an impact on the field of medicine. Cancer diagnosis leads patients (pts) to inform about their illness. Objectives: To determine the percentage and motivation of pts who browse online about their illness. The most frequent cause to avoid OS according to the institution. Whether OS had an influence on the therapeutic decision. Whether the educational level (EL) and Age Cohort (AC) are related to the frequency of OS. Methods: Descriptive, cross-sectional study. The data was collected from anonymous surveys to pts who made a consult from March to April, 2015 in Pu; and from February to April, 2016 in Pr Results: 360 surveys were made. 180 in Pr, and 180 in Pu. Gender: 55% female. AC: 4% 18-31 y; 13% 32-45 y; 38% 46-59 y; and 45% of 60 y or older. EL: Elementary 43%; High school 42%; College/University 15%. OS: Pu: 17%. Pr: 32%. Reasons to avoid OS: The info provided by the doctor is enough Pr: 24% Pu: 16%; Pr 18.69%, Pu 1.35% avoid further info; Pr 40%, PuI 35% ignore how to use the Internet; Pr 17%, Pu 47% lack Internet access. Reasons for OS: the doctor does not provide enough info Pr 39% Pu 14%; to add further info: Pr 61% Pu 86%. Considers trustworthy info: Always Pr 13% PuI 31%; Sometimes Pr 81% PuI 66% Never Pr 6% PuI 6%.Useful information to make decisions about their treatment: Pr 83% Pu 81% EL/OS:p = 0.001. AT/OS: p = 0.001. Institution/OS:p = 0.001. Conclusions: More than 75% of pts did not consult online mainly due to lack of internet access. 20% considers that the information is always trustworthy, in 80% was useful for the decision making of their treatment. A significant relation among EL, AC and the institution was found, thus showing that the younger the age –and the higher the academic training-, the more OS is made by oncology pts. That is the reason why we consider that raising awareness about these factors in order to properly guide pts into an adequate and trustworthy OS could improve the process of decision making.

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