Synchronous mucinous adenocarcinoma of the endometrium and mucinous cystadenoma of bilateral ovaries presenting during fertility therapy.

We describe a very rare case of synchronous mucinous tumor of the endometrium and ovaries presenting during ovulation induction. A 31-year-old woman received ovulation induction for 5-year primary infertility. Ultrasonography revealed mucus retention in the uterine cavity and bilateral multicystic ovaries during ovulation induction. Atypical hyperplasia was diagnosed by endometrial curettage. Repeated procedures including ovarian cystectomy, endometrial curettage and in vitro fertilization combined with progestine therapy resulted in no pregnancy but rapid recurrences. She finally underwent simple hysterectomy and bilateral salpingo-oophorectomy. Microscopic examination revealed mucinous cystadenoma in the both ovaries and well differentiated mucinous adenocarcinoma of the endometrium.