Objective To evaluate the incidence of Y-chromosome microdeletions in individuals born from vasectomized fathers who underwent vasectomy reversal or in vitro fertilization with sperm retrieval by epididymal aspiration (percutaneous epididymal sperm aspiration). Methods A case-control study comprising male children of couples in which the man had been previously vasectomized and chose vasectom...

BACKGROUND We hypothesized that infertile men with varicoceles have molecular/genetic defects that interact with varicoceles to induce infertility. Studies directly on testis tissue appeared to be a way to link histology, markers for molecular/genetic defects and spermatogenesis, but testis biopsies may induce morbidity. In this report, we present safety and efficacy data on ultrasonically guid...

A total of 740 cycles of intracytoplasmic sperm injection (ICSI) were performed: 625 cycles when < 6 x 10(5) total motile spermatozoa were harvestable from the ejaculate and 115 cycles in cases with a history of previous fertilization failure after classic in-vitro fertilization or subzonal sperm injection. An average of two pronuclei were observed in 63% of the injected oocytes, allowing 725 t...

OBJECTIVES Evaluation of the presence of spermatozoa in vas deferens fluid after a long interval of unilateral and homolateral percutaneous epididymal sperm aspiration (PESA) in vasectomized men. When found, the spermatozoa were evaluated including concentration and motility, in order to verify the patency of the epididymal tubules. MATERIALS AND METHODS Four patients, numbered in a progressi...

We honour the life of Robert Schoysman a pioneer and visionary in reproductive medicine, internationally renowned gynaecological surgeon and one of the pioneers of in vitro fertilization (IVF) in Belgium. From the early sixties he was interested in different options of male infertility treatment, including surgery and donor insemination. He was the pioneer of microsurgical epididymal sperm aspi...

ACKNOWLEDGEMENTS The authors would like to thank Rochford Medical for the kind donation of P-1 throughout the duration of this study. 1. Waterstone, JJ. and Parsons, JH. (1992) A prospective study to Investigate the value of flushing follicles during transvaginal ultrasound-directed follicle aspiration, Fertil. Steril. 57,221-223. 2. Staessen, C., Janssenwillen, C. et al. (1998) Controlled comp...