premise: The rate of endometrial cancer has gone up in a number of countries.
hypothesis: Endometrial cancer . If the disease is diagnosed at an early stage , the outcome is favorable , and the overall five-year survival rate in the United States is greater than 80 % . It is more common in the developed world and is the most common cancer of the female reproductive tract in developed countries . Rates of endometrial cancer have risen in a number of countries between the 1980s and 2010 .