Related Experiment Video
Updated: Aug 21, 2026

Vessel-Sparing Microsurgical Longitudinal Intussusception Vasoepididymostomy to Treat Epididymal Obstructive Azoospermia
Published on: May 27, 2022
Etiology of azoospermia in 100 consecutive nonvasectomized men
Jens Fedder1, Dorthe Crüger, Birthe Oestergaard
1The Fertility Clinic, Braedstrup Hospital, Braedstrup, Denmark. jfe@bs.vejleamt.dk
Abstract:
History was taken systematically for 100 azoospermic, nonvasectomized men referred consecutively to a Danish fertility clinic. The men were examined by ultrasound, and their blood samples were analyzed for karyotype, Y microdeletions, and cystic fibrosis transmembrane conductance regulator gene mutations. In 29% of patients, the condition could be explained by genetic abnormalities; in 22%, by diseases or external influence; and in 27%, by former cryptorchidism. The azoospermic condition remained unexplained in only 22%.
Related Concept Videos
Infertility in Males
Spermatogenesis
Sperm Transport
The maturation phase occurs in the epididymis, where sperm...
Amebiasis
Oogenesis
Infertility in Females
Endometriosis, a condition characterized by abnormal growth of endometrial...
