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Reconstruction of seminal ducts in obstructive azoospermia

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Depending on the localization of the obstruction of the seminal ducts, either a microsurgical reconstruction (tubulovasostomy, vasovasostomy) or a transurethral resection of the ejaculatory ducts is carried out. We have compared the effectiveness and economic advantages of reconstructive microsurgery of the epididymis and vas deferens with standard procedures in animal experiments. Microsurgical invagination techniques in tubulovasostomy are equal to the standard procedure from the point of view of the patency and fertility rates. They are also easier to learn and carry out. Less time is required for the invagination technique, and also less microsurgical suture material. The double-layer technique in vasovasostomy is equal to the one-layer microsurgical technique from the point of view of patency and fertility rates. The one-layer technique requires less time and suture material. It seems that the discrepancy between the patency and the fertility rate is related to immunological processes after reconstruction of the seminal ducts. In cases of obstructive azoospermia it is necessary to investigate the individual conditions and possibilities of the infertile couple. As a result of the high success rate obtainable today by surgical reconstruction of the seminal ducts, this must constitute the first type of treatment to be considered, before any of the procedures of reproductive medicine are undertaken.
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Keywords: Azoospermia; infertility; seminal ducts; surgery; tubulovasostomy; vasovasostomy

Document Type: Research Article

Affiliations: Department of Urology and Andrology, University Hospital, Freiburg, Germany

Publication date: January 1, 2001

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