Introduction: The incidence of ovarian cancer is high and continues to increase yearly, especially in Padang. About 90% of them are the type of epithelial ovarian cancer. One of the predisposing factors of this cancer is endometriosis. Endometriosis has the same characteristics as malignant tumors, including the ability to invade other organs. It is known that endometriosis occurs in 7% -15% of women of childbearing age and has a variety of symptoms, making diagnosis difficult. This study aims to determine the relationship between the incidence of endometriosis and epithelial ovarian cancer in type 1 in Dr.M.Djamil Hospital Padang from 2017 to 2018.
Methods: This study is a cross-sectional analytic study. Subjects were obtained using a total sampling of ovarian cancer patients who went to the Obstetrics and Gynecology Dr. M.Djamil Hospital Padang from January 2017 - December 2018.
Results: The retrospective study used the data of epithelial ovarian cancer patients diagnosed at the Obstetrics and Gynecology Dr. M.Djamil Hospital Padang. The incidence of endometriosis was obtained at 8.3%, and the highest type of epithelial ovarian cancer is epithelial ovarian cancer type 1 (70.7%). The incidence of endometriosis had significantly increased in patients with ovarian cancer in type 1 with a significance value of 0,010.
Conclusion: The incidence of endometriosis was significantly associated with epithelial ovarian cancer type 1 because of p<0.05. Health agencies need extraordinary attention to prevent epithelial ovarian cancer endometriosis changes into type 1.