Induction of spermatogenesis in azoospermic men after varicocelectomy repair: an update

To assess the treatment outcome after varicocele repair in azoospermic men and to correlate this outcome with the testicular histology patterns.

Prospective study.

Academic medical centers.

Medical records of 27 azoospermic men, who underwent testis biopsy and microsurgical repair of clinical varicocele between July 1999 and May 2004, were reviewed.

Twenty-seven azoospermic men underwent testis biopsy and microsurgical repair of clinical varicocele. All patients had at least two semen analyses showing azoospermia taken before the surgery and two semen analyses postoperatively.

Semen analysis after varicocelectomy.

Hypospermatogenesis was identified in 9, maturation arrest in 8, and germ cell aplasia in 10 men. Induction of spermatogenesis was achieved in nine men (33.3%). Of these, four had germ cell aplasia, three had maturation arrest, and two had hypospermatogenesis. The improvement in sperm concentration and motility ranged from 1.2 x 10(6)/mL to 8.9 x 10(6)/mL, and from 24% to 75.7%, respectively. Of these nine patients with improvement in semen quality, five relapsed into azoospermia 6 months after the recovery of spermatogenesis (four germ cell aplasia and one maturation arrest). One patient with maturation arrest established pregnancy.

Azoospermic patients may have an improvement in semen quality after varicocelectomy. Semen samples may be cryopreserved after an initial improvement after varicocelectomy.