These experiments, taken together, should critically determine if there is a role for the CSF-1/ c-fms autocrine, endocrine, or paracrine loop in the progression of endometrial adenocarcinoma. If so, alterations in this loop may provide novel medical therapies for this disease. Additionally, these experiments will determine which are the predominant cytokines expressed in these tumors, and will help the investigators to determine the role, if any, these cytokines play in cancer cell growth and proliferation in relationship with each other and within and outside of the estrogen-mediated pathways.