Lumps and swellings in the testicles (balls) aren’t usually caused by anything serious, but you should get them checked by a GP.

See a GP if you have:

  • a lump in your testicles
  • swollen testicles
  • a change in the shape of your testicles
  • a change in the way your testicles feel
  • one testicle that’s become bigger than the other
  • aching or discomfort in your testicles that doesn’t go away

Lumps in the testicles can be a sign of testicular cancer. This is easier to treat if it’s found early.

Causes of testicle lumps and swellings

Lumps and swellings in the testicles can have lots of different causes.

Most are caused by something harmless, such as a build-up of fluid (cyst) or swollen veins in the testicles (varicocele).

But sometimes they can be a sign of something serious, such as testicular cancer.

Don’t try to self-diagnose the cause of your lump – always see a GP.