Journal List > Korean J Obstet Gynecol > v.54(12) > 1088386

You, Lee, Oak, Park, and Lee: A case of retroperitoneal ectopic pregnancy of obturator fossa


Ectopic pregnancy occurs in approximately 1.5 to 2.0% of pregnancies and accounts for 6% of all maternal deaths. Nearly all ectopic pregnancies are implanted in the fallopian tube. However, they may rarely occur within the retroperitoneal area in 1.3% of the ectopic pregnancy. Early diagnosis is difficult because it is not easy to differentiate symptoms of ectopic pregnancy in obturator fossa with in fallopian tube. Treatment is the removal of ectopic tissue through laparotomy or laparoscopy. A 26-year-old woman was diagnosed with left ectopic pregnancy and amenorrhea for 9+0 weeks and visited our hospital. A diagnosis of ectopic pregnancy in obturator fossa was made by laparoscopy, ectopic conceptus removal and the ligation of left hypogastric artery was performed. We report this case with a brief review of the literatures.

Figures and Tables

Fig. 1
Transvaginal sonography findings. (A) No intrauterine gestational sac and normal right ovary. (B), (C) 1.4 cm (CRL) lesion in the 5.6 × 3.9 cm size mass of left adnexa. Fetal heart rate was not detected. CRL, crown-rump length.
Fig. 2
Laparoscopic findings. (A), (B) Uterine myoma and left salpingectomy state. (C) Protruding mass covered with retroperitoneum was detected behind left ovary. (D) Ectopic pregnancy tissue of chorionic villi and gestational sac (arrow). (E), (F) Postoperation findings.
Fig. 3
The pathologic findings. (A) Chorionic villi (arrow) and peritoneal tissue was detected in the lower area (H&E, ×100.) (B) The magnification view of chorionic villi (H&E, ×200).


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