Presence of sperm in the pre-vasectomy reversal semen analysis: incidence and implications

J Urol. 1996 Jan;155(1):167-9.


Purpose: We determined the incidence of sperm in the ejaculate before vasectomy reversal, and correlated this result with intraoperative and postoperative findings.

Materials and methods: Before vasectomy reversal semen was analyzed and granulomas were palpated in 186 men. The results were correlated with intraoperative vasal fluid and postoperative semen analyses.

Results: Of 18 men (9.7%) with sperm present in the pre-reversal analysis 94% had sperm in at least 1 vas intraoperatively. The presence of palpable granulomas at the vasectomy site did not correlate with either pre-reversal or post-reversal semen analyses, or the presence of sperm in the vasal fluid intraoperatively.

Conclusions: Sperm are present in 9.7% of pre-reversal ejaculates and predict sperm in at least 1 vas intraoperatively. These findings also suggest the possibility of late vasectomy failures.

Publication types

  • Comparative Study

MeSH terms

  • Adult
  • Cohort Studies
  • Humans
  • Male
  • Prognosis
  • Semen / cytology*
  • Sperm Count*
  • Sperm Motility
  • Time Factors
  • Treatment Failure
  • Vasovasostomy*