When there are dilated veins there is stagnation of blood in the scrotal ... include - Varicocele with low sperm count that are not visible clinically and can be picked up only by ultrasound ...

Modest grades of varicocele can cause pain ... Still higher grades can be seen as a bulge on the affected side of the scrotum and felt as a bag of worms. It may cause a drop in the sperm ...

Varicocele affects 9–15% of men, and is the most common cause of male infertility. This disorder is often treated surgically, but several minimally invasive techniques for percutaneous gonadal ...