Prevalence of varicocele is approximately 15.1% among the general population. Studies showed that surgical correction of clinically palpable varicocele could improve the semen parameters. However, there is scarce of study to demonstrate post-operative outcome of varicocelectomy among the patients with abnormal semen parameter. Therefore, this study tried to compare the microscopic changes in sperm concentration, sperm motility and sperm morphology before and after varicocelectomy. This quasi experimental study was done in Urology Department of
Bangabandhu Sheikh Mujib Medical University (BSMMU), Dhaka, Bangladesh from November 2014 to April 2016. Forty five patients with clinically palpable varicocele were finally included in the study. Semen parameters of these patients were assessed according to the manual of the World Health Organization.