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Corrective surgery of obstructive azoospermia.

Obstructive azoospermia was corrected surgically in 233 cases of vasovasotomy and 97 cases of post-inflammatory epididymovasostomy. Good results were obtained for groups of: younger age; shorter duration of obstruction; bilateral vas-to-vas anastomosis level; bilateral end-to-end anastomosis technique; bilateral oozes; no splint; and vasovasostomy patients hospitalized for seven days. Satisfactory results were obtained for groups of: nontuberculous epididymal obstruction; side-to-side anastomosis technique; and bilateral vas-to-epididymal head anastomosis level in epididymovasostomy. Reversibility of post-vasectomy azoospermia averaged 82% for patency, and 34% for pregnancy, and for post-inflammatory azoospermia, 31% for patency, and 13% for pregnancy. Failure of operation was due mainly to fibrosis and sperm granuloma on the anastomosed site.