title: Air bubble location inside the uterus after transfer: is the embryo really there?
abstract: OBJECTIVE
  To demonstrate that the location of the air bubble after embryo transfer (ET) does not necessarily indicate the final embryo location.
  
  
  METHODS
  Case report.
  
  
  METHODS
  Private clinic.
  
  
  METHODS
  A couple with primary infertility for whom a diagnosis of bicornuate uterus with a very open angle between horns was confirmed.
  
  
  METHODS
  Laparoscopy and hysteroscopy were performed before an IVF cycle in which a single embryo was replaced.
  
  
  METHODS
  Air bubble image immediately after ET and gestational sac location 3 weeks later.
  
  
  RESULTS
  Immediately after a single ET, the air bubble was seen in the left uterine horn. Three weeks later, a gestational sac was seen in the right uterine horn.
  
  
  CONCLUSIONS
  The location of the air bubble immediately after ET does not necessarily indicate the final embryo location.
authors.affiliation: Instituto Valenciano de Infertilidade (IVI-Lisboa), Lisbon, Portugal. sreis@ivi.es
authors.forename: Sérgio Reis
authors.initials: SR
authors.lastname: Soares
authors.forename: Catarina
authors.initials: C
authors.lastname: Godinho
authors.forename: Sofia
authors.initials: S
authors.lastname: Nunes
authors.forename: António
authors.initials: A
authors.lastname: Pellicer
mesh_terms: D000328:Adult; D000388:Air; D010064:Embryo Implantation; D004624:Embryo Transfer; D004622:Embryo, Mammalian / Q000000981:diagnostic imaging; D005260:Female; D006801:Humans; D011247:Pregnancy; D014463:Ultrasonography; D014599:Uterus / Q000002:abnormalities* / Q000000981:diagnostic imaging