title: Octuplet pregnancy following intracytoplasmic sperm injection and cryo embryo transfer.
abstract: BACKGROUND
  It is well known that the frequency of multiple gestation increases after in vitro fertilization in which more than one embryo is transferred. The aim is to report an octuplet pregnancy following intracytoplasmic sperm injection and cryo embryo transfer.
  
  
  METHODS
  A 31-year-old woman and her 35-year-old husband, both Caucasian, complained of primary infertility. The intracytoplasmic sperm injection and cryo embryo transfer procedure was recommended as treatment. Ovarian stimulation was performed using recombinant follicle-stimulating hormone and human menopausal gonadotropin. Two embryos were transferred to the uterus. This fertilization cycle was unsuccessful. Three months later, cryo embryo transfer of two frozen/thawed embryos was performed, which resulted in pathological monozygotic octuplet anembryonic pregnancy. Two, and later eight, empty sacs were detected by sonographic examination. Cytogenetic examination revealed normal male karyotype. DNA analysis confirmed identical polymorphisms in all the gestation sacs, i.e. a monozygotic origin of all eight sacs.
  
  
  CONCLUSIONS
  We report a rare case of octuplet pregnancy after intracytoplasmic sperm injection and cryo embryo transfer.
authors.affiliation: Institute of Medical Biology, Genetics, and Clinical Genetics, Faculty of Medicine, Comenius University in Bratislava, Bratislava, Slovak Republic.
authors.forename: Vanda
authors.initials: V
authors.lastname: Repiská
authors.forename: Ivan
authors.initials: I
authors.lastname: Lehocký
authors.forename: Lubos
authors.initials: L
authors.lastname: Danisovic
authors.forename: Ivan
authors.initials: I
authors.lastname: Varga
authors.forename: Daniel
authors.initials: D
authors.lastname: Böhmer
authors.forename: Ludovít
authors.initials: L
authors.lastname: Danihel
authors.forename: Stefan
authors.initials: S
authors.lastname: Galbavý
mesh_terms: D000328:Adult; D015925:Cryopreservation; D004624:Embryo Transfer; D005260:Female; D006801:Humans; D007621:Karyotyping; D008297:Male; D011110:Polymorphism, Genetic; D011247:Pregnancy; D011272:Pregnancy, Multiple; D020554:Sperm Injections, Intracytoplasmic