RESUMEN
This study was carried out to assess the importance of subclinical grade of varicocele in evaluation of subfertile men. A total of 60 subfertile men with subclinical varicocele diagnosed by scrotal color dupplex ultrasound. Patients were randomly assigned to group I in whom high ligation varicocelectomy was performed and group II who received placebo treatment. Patients were followed up by seminogram at 3 and 6 months. Patients underwent high ligation varicocelectomy Group I showed statistically significant improvement in sperm count after. 3 months and highly statistically significant improvement in sperm count after 6 months. The statistically significant. Improvement in the percentage of abnormal forms was noticed only after 6 months postoperatively. In group II follow up showed non-significant improvement in sperm count, percentage of abnormal forms and grades of sperm motility at either 3 or 6 months. We concluded that the effect of varicocele on semen parameters has no relation to its size and consequently varicocelectomy for subclinical varicocele. diagnosed by color dupplex ultrasound, has benificial effect on semen parameters