Updated August 06, 2006.

Facts about Varicocele
A varicocele is a collection of enlarged, varicose veins that develops in the spermatic cord. Caused by a defective or damage valve that regulates blood flow into the main circulatory system. Blood flow is hampered and enlargement of the vein occurs.

A varicocele can occur in one or both testicles

Most common in the left testicle (85% more common)

More common in men between the ages of 15 and 25 years old (10-20% higher).

Varicocele, a Common Cause of Infertility

About 40% of infertile men have a varicocele.

About 80% of men with secondary infertility, who have fathered one child but are unable to do so again, have a varicocele.

Infertility is common because the blood carried in the dilated vein makes the testes warmer. It is this warmth damaging sperm that is believed to be the cause of infertility.

Signs and Symptoms of varicocele

The majority of men with a varicocele do not experience any symptoms.

Most cases are discovered during a physical examination by a doctor i.e. for infertility

The testicle may ache

There may have a feeling of heaviness in the testicle

It may be possible to feel the enlarged vein