title: Quantitative evaluation of spermatogenesis by testicular histology in men with congenital absence of the vas deferens undergoing epididymal sperm aspiration.
abstract: A quantitative histological evaluation of testicular biopsy in patients undergoing microsurgical epididymal sperm retrieval for in-vitro fertilization revealed no correlation between the quantity or quality of spermatozoa retrieved and the actual testicular sperm production. Poor retrieval of sperm was associated with blockage induced by secondary pressure damage in the rete testis collecting area.
authors.affiliation: St Luke's Hospital, St Louis, MO.
authors.forename: S J
authors.initials: SJ
authors.lastname: Silber
authors.forename: P
authors.initials: P
authors.lastname: Patrizio
authors.forename: R H
authors.initials: RH
authors.lastname: Asch
mesh_terms: D001707:Biopsy, Needle; D006801:Humans; D008297:Male; D013076:Sperm Count; D013081:Sperm Motility; D013091:Spermatogenesis / Q000502:physiology*; D013737:Testis / Q000033:anatomy & histology*; D014649:Vas Deferens / Q000002:abnormalities / Q000503:physiopathology*