LAUSR

OBJECTIVE To examine patterns of referral to gynecologic oncologists and perioperative outcomes based on surgeon specialty for women with endometrial cancer and hyperplasia. METHODS The National Surgical Quality Improvement Program database was used to perform a retrospective cohort study of women with endometrial cancer and hyperplasia who underwent hysterectomy from 2014 to 2015. Patients were stratified based on treatment by a gynecologic oncologist or other health care provider. Patterns of referral to a gynecologic oncologist was the primary outcome, and mode of hysterectomy and complications were secondary outcomes. RESULTS A total of 6,510 women were identified. Gynecologic oncologists performed 90.9% (95% confidence interval [CI] 90.1-91.7) of the hysterectomies for endometrial cancer, 66.8% (95% CI 63.1-70.4) for complex atypical endometrial hyperplasia, and 49.3% (95% CI 44.7-53.8) for endometrial hyperplasia without atypia. Older women and those with a higher American Society of Anesthesiology score were more likely to be treated by an oncologist. Minimally invasive hysterectomy was performed in 73.6% (95% CI 72.1-75.1) of women with endometrial cancer operated on by gynecologic oncologists compared with 73.8% (95% CI 68.8-78.2) of those treated by other physicians (odds ratio [OR] 0.99, 95% CI 0.80-1.23); lymphadenectomy was performed in 56.3% of women treated by gynecologic oncologists compared with 34.8% of those treated by other specialists (OR 2.42, 95% CI 1.99-2.94). Severe complications were uncommon and there was no difference in complication rates based on specialty, 2.6% (95% CI 2.2-3.1) compared with 2.0% (95% CI 0.8-3.3). CONCLUSION Gynecologic oncologists provide care for the majority of women with endometrial cancer who undergo hysterectomy in the United States and are also involved in the care of a large percentage of women with endometrial hyperplasia.