Objective: To compare, before and after repair of varicocele, the semen parameters (SP) in relation to the persistence of retrograde vein flow. Material and Methods: We examined the correlation between semen characteristics and retrograde fior (RF) into the pampiniform plexus in 158 patients with varicocele, before and after low inguinal spermatic vein ligation. Results: The results of the investigation before surgery showed that all patients had RF and also a decrease in quantitative and qualitative SP. After surgery an improvement was observed in SP and there was a decrease in RF as a function of time elapsing from surgery. One year after surgery, an improvement in SP in 136(86.1%) patients was observed. In 14 (8.8%) no change was noted and in 8(5.1 %) there was a deterioration in SP. Comparison between increased SP and persistence of RF 1 year after surgery revealed that of the 136 patients who showed improvement in SP, 124 (91.1%) did not have RF. Of the 14 patients with no improvement in SP, 12 (85.7%) were free of RF and 9 patients with deteriorated SP and bilateral RF. Amongst 132 infertile men, the wives of 55(41.6%) became pregnant. None of these 55 men demonstrate RF. Conclusions:These results revealed a significant correlation between the improvement of SP, pregnancy in patients’ wives and disappearance of RF. These results may be considered as a parameter of successful varicocelectomy.

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