1. All patients with a diagnosis of complex atypical hyperplasia or endometrial biopsy within three months of study enrollment OR patients with a diagnosis of grade 1 endometrioid endometrial carcinoma on endometrial biopsy within three months of study enrollment in the presence of one or more of the following: 1) desire for future fertility 2) morbid obesity (body mass index > 40) 3) multiple co-morbidities (American Society of Anesthesiology Classification (ASA) Class 3 or 4)