title: Sperm cryopreservation before testicular cancer treatment and its subsequent utilization for the treatment of infertility.
abstract: OBJECTIVE
  In this study we report our results with storage of cryopreserved semen intended for preservation and subsequent infertility treatment in men with testicular cancer during the last 18 years.
  
  
  METHODS
  Cryopreserved semen of 523 men with testicular cancer was collected between October 1995 and the end of December 2012. Semen of 34 men (6.5%) was used for fertilization of their partners. They underwent 57 treatment cycles with cryopreserved, fresh, and/or donor sperm.
  
  
  RESULTS
  A total of 557 men have decided to freeze their semen before cancer treatment. Azoospermia was diagnosed in 34 men (6.1%), and semen was cryopreserved in 532 patients. Seminoma was diagnosed in 283 men (54.1%) and nonseminomatous germ cell tumors in 240 men (45.9%). 34 patients who returned for infertility treatment underwent 46 treatment cycles with cryopreserved sperm. Totally 16 pregnancies were achieved, that is, 34.8% pregnancy rate.
  
  
  CONCLUSIONS
  The testicular cancer survivors have a good chance of fathering a child by using sperm cryopreserved prior to the oncology treatment, even when it contains only limited number of spermatozoa.
authors.affiliation: Department of Gynaecology and Obstetrics, Faculty of Medicine, Masaryk University and Faculty Hospital Brno, Obilní trh 11, 602 00 Brno, Czech Republic.
authors.forename: Jana
authors.initials: J
authors.lastname: Záková
authors.affiliation: Department of Gynaecology and Obstetrics, Faculty of Medicine, Masaryk University and Faculty Hospital Brno, Obilní trh 11, 602 00 Brno, Czech Republic.
authors.forename: Eva
authors.initials: E
authors.lastname: Lousová
authors.affiliation: Department of Gynaecology and Obstetrics, Faculty of Medicine, Masaryk University and Faculty Hospital Brno, Obilní trh 11, 602 00 Brno, Czech Republic.
authors.forename: Pavel
authors.initials: P
authors.lastname: Ventruba
authors.affiliation: Department of Gynaecology and Obstetrics, Faculty of Medicine, Masaryk University and Faculty Hospital Brno, Obilní trh 11, 602 00 Brno, Czech Republic.
authors.forename: Igor
authors.initials: I
authors.lastname: Crha
authors.affiliation: Department of Gynaecology and Obstetrics, Faculty of Medicine, Masaryk University and Faculty Hospital Brno, Obilní trh 11, 602 00 Brno, Czech Republic.
authors.forename: Hana
authors.initials: H
authors.lastname: Pochopová
authors.affiliation: Transfusion and Tissue Department, Faculty Hospital Brno, Jihlavská 20, 625 00 Brno, Czech Republic.
authors.forename: Jaroslava
authors.initials: J
authors.lastname: Vinklárková
authors.affiliation: Transfusion and Tissue Department, Faculty Hospital Brno, Jihlavská 20, 625 00 Brno, Czech Republic.
authors.forename: Eva
authors.initials: E
authors.lastname: Tesařová
authors.affiliation: Department of Urology, Faculty of Medicine, Masaryk University and Faculty Hospital Brno, Jihlavská 20, 625 00 Brno, Czech Republic.
authors.forename: Mohamed
authors.initials: M
authors.lastname: Nussir
mesh_terms: D000328:Adult; D015925:Cryopreservation / Q000379:methods*; D005260:Female; D005307:Fertilization in Vitro / Q000379:methods*; D006801:Humans; D007248:Infertility, Male / Q000209:etiology / Q000534:rehabilitation / Q000628:therapy*; D008297:Male; D018239:Seminoma / Q000150:complications / Q000534:rehabilitation*; D013094:Spermatozoa / Q000502:physiology*; D013736:Testicular Neoplasms / Q000150:complications / Q000534:rehabilitation*