Condition: Varicocele

Varicocele is a common condition affecting men and presents as enlarged veins around the testicle.


Tel: 020 3653 2042

What is a varicocele?

A varicocele is a common disorder that causes the veins in the scrotum (the sac of skin that holds the testicles) to become enlarged. The left scrotum is most often affected but a varicocele can affect either side. It’s a very common condition with up to 15% of all adult men being affected at some point in their life.

Varicoceles are similar to varicose veins that commonly affect the legs. Any symptoms you may experience are usually mild, but varicoceles are associated with subfertility in some people, so it’s important to seek a diagnosis and appropriate treatment as soon as you can if you suspect you have the condition.

What are the symptoms of varicocele?

Other than the enlargement of the veins in the scrotum, which may look or feel like a ‘bag of worms’, varicoceles rarely causes symptoms. However, you may notice:

  • Heaviness, dull pain or aching in your testicles or scrotum, which is relieved when lying down
  • Swelling of your testicles or scrotum 
  • Shrinking of your testicles if it is present during puberty (atrophy)
  • A small lump above your affected testicle
  • Difficulty conceiving (infertility)

What causes varicocele?

What causes varicocele?

Varicoceles occur when the small veins in each side of the scrotum, called the pampiniform plexus, become enlarged.

It’s not known exactly what causes this to happen, but some experts think it may be in relation to a problem in the veins in the spermatic cord. The function of these veins is to return blood from the testicles to the body. However, in the case of varicoceles, it is thought that a fault in the valves of these veins or compression higher up in the abdomen may cause blood to build up in the veins in the testicles, causing them to swell over time.

How is a varicocele diagnosed?

At OneWelbeck, our urology consultants can make a diagnosis of varicoceles by performing a physical examination of the scrotum. They may also perform an ultrasound scan to confirm the diagnosis, eliminate any other conditions that could be causing your symptoms and check for a lesion or any other factor that may be obstructing blood flow in the scrotum. 

How can varicoceles be treated?

Varicoceles do not require treatment unless it is causing you bothersome symptoms or if your fertility has been affected. 

In these cases, a surgical procedure is performed to treat the affected veins by ligating them in order to redirect blood flow to other healthy veins in your scrotum. This can be performed using open microsurgery or radiological embolisation.

At your consultation, your consultant will discuss through all the treatment options and will recommend the most appropriate next steps to ensure you make a full and fast recovery.