title: Subchorionic hematoma associated with heterotopic pregnancy following in vitro fertilization: a case report.
abstract: BACKGROUND
  After treatment for infertility using in vitro fertilization (IVF)-embryo transfer, a high index of suspicion must be maintained for early diagnosis and treatment of concurrent ectopic pregnancy; however, the likelihood of a positive outcome for the intrauterine pregnancy remains uncertain.
  
  
  METHODS
  A subchorionic hematoma threatening an intrauterine gestation noted concurrently with ultrasound diagnosis of a heterotopic IVF pregnancy resolved following laparoscopic salpingectomy.
  
  
  CONCLUSIONS
  Although symptomatic subchorionic hematoma may be associated with an increase in the rate of spontaneous miscarriage for a singleton pregnancy, it may not present a similar risk in the presence of a concurrent heterotopic gestation.
authors.affiliation: New York University Program for in Vitro Fertilization, Reproductive Surgery and Infertility, New York University School of Medicine, New York, NY 10016, USA. flisse02@med.nyu.edu
authors.forename: Eric
authors.initials: E
authors.lastname: Flisser
authors.forename: Frederick
authors.initials: F
authors.lastname: Licciardi
mesh_terms: D000328:Adult; D002823:Chorion / Q000000981:diagnostic imaging*; D005260:Female; D005307:Fertilization in Vitro / Q000009:adverse effects*; D006406:Hematoma / Q000000981:diagnostic imaging* / Q000209:etiology / Q000628:therapy; D006801:Humans; D010535:Laparoscopy; D011247:Pregnancy; D011256:Pregnancy Outcome; D011261:Pregnancy Trimester, First; D011274:Pregnancy, Tubal / Q000000981:diagnostic imaging* / Q000601:surgery; D016216:Ultrasonography, Prenatal