Human Reproduction, Vol. 14, No. 7, 1785-1790,
July 1999
© 1999 European Society of Human Reproduction and Embryology
Testicular fine needle aspiration: the alternative method for sperm retrieval in non-obstructive azoospermia
IVF Unit, Department of Obstetrics and Gynecology, Hadassah-Hebrew University Medical Center, Ein-Kerem, Jerusalem, Israel
The objective of this prospective open study was to determine the feasibility of obtaining mature spermatozoa for intracytoplasmic sperm injection (ICSI) by testicular fine needle aspiration (TEFNA) in men diagnosed with non-obstructive azoospermia. TEFNA consisted of a mean of 15 punctures and aspirations in each testis, using 23 gauge butterfly needles, connected to a 20 ml syringe with an aspiration handle. Patients (n = 85) underwent 111 TEFNA cycles. Mature testicular spermatozoa were recovered in 65 (58.5%) cycles from 50 (58.8%) patients. The sperm recovery rate by testicular histology was 14 out of 29 (48.3%) in patients with Sertoli cell-only, 13 out of 28 (46.4%) in patients with maturation arrest, 19 out of 20 (95%) in patients with hypospermatogenesis, four out of six (66.6%) in patients with tubular hyalinization due to non-mosaic Klinefelter's syndrome. No spermatozoa were found in two cases with post-irradiation fibrosis. ICSI was performed in all 65 cycles. In 58 cycles in which only the husbands' spermatozoa were used, 406 mature oocytes were injected, and 154 (37.9%) were normally fertilized. Of the 143 embryos that developed (92.8%), 119 were transferred in 42 cycles resulting in 18 clinical pregnancies (42.8%), with 31 gestational sacs, providing an implantation rate of 26%. One abortion of a singleton pregnancy occurred (5.6%). No major side-effects, such as haematoma or infection were recorded. In conclusion, we have found TEFNA to be efficient, easy to learn, safe and well tolerated by all patients. In our opinion, TEFNA should be considered the first choice whenever sperm recovery is attempted in patients with non-obstructive azoospermia.
Key words: fine needle aspiration/ICSI/non-obstructive azoospermia
1 To whom correspondence should be addressed
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