Women with ovarian and other gynecologic cancers live significantly longer when they receive care at hospitals that treat a large number of patients with these conditions, according to research on more than 850,000 women. Women with cervical, ovarian, uterine, vaginal and vulvar cancer who were cared for at high-volume centers lived about a year longer than those cared for at low-volume centers, the study found. The number of women treated at high-volume centers steadily increased during the course of the 13-year study.