Endometrial carcinoma with trophoblastic differentiation. An aggressive form of uterine cancer

Abstract
Three cases of poorly differentiated endometrial adenocarcinoma showing trophoblast-like differentiation are reported. The multinucleated, syncytiotrophoblast-like cells were strongly positive for β-human chorionic gonadotropin (β-HCG) by immunohistochemical study. High levels of β-HCG were also present in the patients' serum, but dropped significantly after treatment. The patients had an unusually rapid and progressive clinical course with widespread dissemination and death by tumor.