title: A rare case of bilateral ectopic pregnancy and differential diagnosis of gestational trophoblastic disease.
abstract: BACKGROUND
  Bilateral ectopic pregnancy is a rare condition and is divided in two subgroups, primary and secondary, based on history of assisted reproductive technology.
  
  
  METHODS
  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.
  
  
  CONCLUSIONS
  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.
authors.affiliation: Preventative Gynecology Research Center (PGRC), Imam Hossein Medical Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
authors.forename: Maliheh
authors.initials: M
authors.lastname: Arab
authors.affiliation: Preventative Gynecology Research Center (PGRC), Imam Hossein Medical Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
authors.forename: Seyyedeh
authors.initials: S
authors.lastname: Neda Kazemi
authors.affiliation: Kashan University of Medical Sciences, Kashan, Iran.
authors.forename: Zahra
authors.initials: Z
authors.lastname: Vahedpoorfard
authors.affiliation: Preventative Gynecology Research Center (PGRC), Imam Hossein Medical Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
authors.forename: Adeleh
authors.initials: A
authors.lastname: Ashoori
keywords: Ectopic pregnancy; Reproductive techniques; Rupture