title: Complete hydatidiform mole coexisting with a viable pregnancy as twins after intracytoplasmic sperm injection: a case report.
abstract: BACKGROUND
  Twin pregnancies with 1 healthy fetus and 1 hydatidiform mole are extremely rare events, occurring in 1:20,000-100,000 twin pregnancies.
  
  
  METHODS
  A 32-year-old, nulliparous woman underwent assisted reproduction due to male factor infertility. At 15 weeks' gestation a complete hydatidiform mole coexisting with a viable pregnancy was diagnosed. The couple decided to maintain the pregnancy following detailed counseling regarding the risks and benefits. At 26 weeks' gestation the patient prematurely delivered a 720-g fetus who did not survive due to extreme prematurity. The patient also delivered the products of the molar pregnancy.
  
  
  CONCLUSIONS
  In the event ofa twin pregnancy with 1 viable fetus and 1 molar, continuing the pregnancy may be considered as far as the mother is fully informed, not only regarding the complications that may arise but also regarding the chances of delivering a healthy infant.
authors.affiliation: Assisted Reproduction Unit Titani, Athens, Greece. idedes@doctors.org.uk
authors.forename: Ioannis
authors.initials: I
authors.lastname: Dedes
authors.forename: Ekaterini
authors.initials: E
authors.lastname: Christodoulou
authors.forename: Vasilios
authors.initials: V
authors.lastname: Ziogas
mesh_terms: D000328:Adult; D005260:Female; D005307:Fertilization in Vitro; D005328:Fetal Viability; D006801:Humans; D006828:Hydatidiform Mole / Q000473:pathology*; D008297:Male; D011247:Pregnancy; D011256:Pregnancy Outcome; D020554:Sperm Injections, Intracytoplasmic; D014427:Twins; D014594:Uterine Neoplasms / Q000473:pathology*