Combined intrauterine and ovarian pregnancy: a case report.

A case of combined intrauterine and ovarian pregnancy diagnosed by postoperative microscopic observations is reported in this paper. The patient was a 23-year-old, Japanese nulligravid female. On the 32 day after a previous D & C when normal chorionic tissues of very early gestation were obtained, she complained of severe lower abdominal pain. Immediate laparotomy revealed hemorrhaging from a hematoma-like region on the surface of the left ovary, and partial resection of the left ovary was performed. The resected ovary was composed of an intact corpus luteum and another thin corpus luteum around a hematoma-like region containing chorionic villi, confirming this case to be an ovarian pregnancy. Histological findings of chorionic villi of the ovary indicated that ovarian pregnancy took place during the same menstrual period as intrauterine pregnancy, and not after the prior D & C. From these observations, this case was diagnosed as a combined intrauterine and ovarian pregnancy.