A Rare Case of Bilateral Ectopic Pregnancy and Differential Diagnosis of Gestational Trophoblastic Disease

BACKGROUND Bilateral ectopic pregnancy is a rare condition and is divided in two subgroups, primary and secondary, based on history of assisted reproductive technology. CASE PRESENTATION A 30 year old primigravid woman with history of infertility and ovulation induction presented to a hospital in Kashan in year 2013. She had vaginal bleeding, abdominal pain and ultrasound findings suggested early pregnancy. Due to high titer of β-HCG, gestational trophoblastic disease was proposed and D8C was done in referral and admission to gyneco-oncology ward in Tehran. Repeat sonography suggested ectopic pregnancy in left side and repeat β-HCG level showed an increase of 19435 mIU/ml. Laparotomy findings revealed bilateral ampullary ectopic pregnancy. Bilateral salpingostomy followed by one course of methotrexate was prescribed. CONCLUSION Bilateral ectopic gestation should be considered as a rare differential diagnosis for ectopic pregnancy. In this study, bigger size and rupture in left side was observed.