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Endometrial adenocarcinoma associated with pregnancy is a rare lesion; only 14 acceptable examples have been reported in the literature. This study describes five additional examples with a critical review of the previously published cases. Four of the five women were nulliparous and three had sought medical intervention for infertility. The tumors were all well-differentiated endometrioid adenocarcinomas; three had a focal to extensive papillary pattern and three had focal to extensive squamous differentiation. Four were diagnosed at the time of dilatation and curettage and one at the time of cesarean section for a 28-week, live infant. Follow-up was available for four of the five women. Two women underwent hysterectomy with bilateral oophorectomy and were alive and well 12 and 48 months after diagnosis. The woman who had the live birth and the remaining woman were treated by repeat curettage with or without progesterone therapy, and each woman has had two subsequent full-term pregnancies with live births. These women are alive and well 57 and 58 months after diagnosis. Women with focal, well-differentiated carcinomas can successfully maintain their fertility if followed by repeat curettage with or without progesterone therapy.