4th Obstetrics and Gynecology Controversial Subjects Congress was held between 22-25 September at Dalaman Hilton Sarıgerme Hotel. In the 4-day congress, our founding president and board member Prof. Engin Oral, MD gave a speech on the Future in the Diagnosis of Endometriosis: Early Diagnosis with the Use of Serum Biomarkers. The chair of the session was made by Prof. Faruk Kose, MD.