Overview

A varicocele (VAR-ih-koe-seel) is an enlargement of the veins within the loose bag of skin that holds your testicles (scrotum). A varicocele is similar to a varicose vein you might see in your leg.

Varicoceles are a common cause of low sperm production and decreased sperm quality, which can cause infertility. However, not all varicoceles affect sperm production. Varicoceles can also cause testicles to fail to develop normally or shrink.

Most varicoceles develop over time. Fortunately, most varicoceles are easy to diagnose and many don't need treatment. If a varicocele causes symptoms, it often can be repaired surgically.

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Symptoms

A varicocele often produces no signs or symptoms. Rarely, it might cause pain. The pain may:

• Vary from sharp to dull discomfort
• Increase with standing or physical exertion, especially over long periods
• Worsen over the course of a day
• Be relieved when you lie on your back
• Impaired fertility

With time, varicoceles might enlarge and become more noticeable. A varicocele has been described as looking like a "bag of worms." The condition might cause a swollen testicle, almost always on the left side.

When to see a doctor

Because a varicocele usually causes no symptoms, it often requires no treatment. Varicoceles might be discovered during a fertility evaluation or a routine physical exam.

However, if you experience pain or swelling in your scrotum, discover a mass on your scrotum, notice that your testicles are different sizes, or develop a varicocele in your youth, or you're having problems with fertility, contact your doctor. A number of conditions can cause a scrotal mass or testicular pain, some of which require immediate treatment.

Source: http://www.mayoclinic.com

Causes

Your spermatic cord carries blood to and from your testicles. It's not certain what causes varicoceles.

However, many experts believe a varicocele forms when the valves inside the veins in the cord prevent your blood from flowing properly. The resulting backup causes the veins to widen (dilate). This might cause damage to the testicle and result in worsened fertility.

Varicoceles often form during puberty. Varicoceles usually occur on the left side, most likely because of the position of the left testicular vein.

Source: http://www.mayoclinic.com

Diagnosis

Your doctor will conduct a physical exam, which might reveal a nontender mass above your testicle that feels like a bag of worms. If it's large enough, your doctor will be able to feel it.

If you have a smaller varicocele, your doctor might ask you to stand, take a deep breath and hold it while you bear down (Valsalva maneuver). This helps your doctor detect abnormal enlargement of the veins.

If the physical exam is inconclusive, your doctor might order a scrotal ultrasound. This test, which uses high-frequency sound waves to create precise images of structures inside your body, might be used to ensure there isn't another reason for your symptoms. In certain cases, further imaging might be recommended to rule out other causes for the varicocele, such as a tumor compressing the spermatic vein.

Source: http://www.mayoclinic.com

Complications

A varicocele might cause:

• Shrinkage of the affected testicle (atrophy). The bulk of the testicle comprises sperm-producing tubules. When damaged, as from varicocele, the testicle shrinks and softens. It's not clear what causes the testicle to shrink, but the malfunctioning valves allow blood to pool in the veins, which can result in increased pressure in the veins and exposure to toxins in the blood that may cause testicular damage.
• Infertility. Varicoceles might keep the local temperature in or around the testicle too high, affecting sperm formation, movement (motility) and function.

Lifestyle and home remedies

If you have a varicocele that causes you minor discomfort, but doesn't affect your fertility, you might try the following for pain relief:

• Take over-the-counter painkillers, such as acetaminophen (Tylenol, others) or ibuprofen (Advil, Motrin IB, others).
• Wear an athletic supporter to relieve pressure.

Source: http://www.mayoclinic.com

Risk factors

There don't appear to be any significant risk factors for developing a varicocele.

Source: http://www.mayoclinic.com