Author Contributions
All authors have read and reviewed the manuscript. Hiroshi Masuda: performed an orchidectomy and Onco-TESE with the author and followed up postoperatively. Teruo Inamoto and Haruhito Azuma: reviewed the manuscript. Hirotsugu Oku: was a doctor in an ART clinic who referred patients to our hospital and successfully performed ICSI with cryopreservation sperm.