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Human Reproduction, Vol. 5, No. 1, pp. 89-93, 1990
© 1990 European Society of Human Reproduction and Embryology

research-article

Quantitative evaluation of spermatogenesis by testicular histology in men with congenital absence of the vas deferens undergoing epididymal sperm aspiration

Sherman J. Silber1, Pasquale Patrizio2 and Ricardo H. Asch2

St Luke's Hospital St Louis, MO 2Division of Reproductive Endocrinology and Infertility, Department of Obstetrics and Gynecology, University of California at Irvine Orange, CA, USA

Correspondence: 1To whom correspondence should be addressed

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.

Key words: aspiration/azoospermia/obstnicUve/speiTn/spermatogenesis


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