Adenomatoid tumor of uterus: presentation in endometrial curettings

A case of adenomatoid tumor of the uterus with an unusual initial presentation is reported. The patient, a 25-year-old female, underwent a dilatation and curettage during investigation for infertility. Endometrial curettings revealed infiltration of the stroma by epithelioid and signet-ring-type tumor cells. Subsequent hysterectomy revealed a large, somewhat ill-defined posterior myometrial tumor that on the basis of histologic, histochemical, and ultrastructural investigation proved to be an adenomatoid tumor with infiltration into the endometrium.