title: Binovular complexes after ovarian stimulation. A report of four cases.
abstract: BACKGROUND
  Human ovary is known to contain polyovular follicles at birth but it is considered to be rare in adult ovaries.
  
  
  METHODS
  Four cases are presented where binovular complexes were found after ovarian stimulation. The age of women was 22 to 33 years and all of them had a good response to ovarian stimulation. Two different types of binovular complexes were found. The mature oocytes of three binovular complexes were fertilized by ICSI. The generated embryos did not develop beyond the eight-cell stage.
  
  
  CONCLUSIONS
  The mature oocytes of binovular complexes can be fertilized but their developmental potential is limited.
authors.affiliation: Laboratory of Physiology & Laboratory of Reproductive Physiology-IVF.
authors.forename: B
authors.initials: B
authors.lastname: Turkalj
authors.affiliation: IVF Unit, General University Hospital of Alexandroupolis, School of Medicine, Democritus University of Thrace, Alexandroupolis, Greece.
authors.forename: L
authors.initials: L
authors.lastname: Kotanidis
authors.affiliation: IVF Unit, General University Hospital of Alexandroupolis, School of Medicine, Democritus University of Thrace, Alexandroupolis, Greece.
authors.forename: N
authors.initials: N
authors.lastname: Nikolettos
keywords: Binovular complex; binovular follicle; embryo development; fertilization