The Society of Gynecologic Oncology (SGO), headquartered in Chicago, Illinois, is the premier medical specialty society for health care professionals trained in the comprehensive management of gynecologic cancers, affecting the uterus, fallopian tubes, ovaries, cervix, vagina, and vulva. As a 501(c)(6) organization, the SGO contributes to the advancement of women’s cancer care by encouraging research, providing education, raising standards of practice, advocating for patients and members and collaborating with other domestic and international organizations.