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Medically reviewed by Last updated on Oct 31, 2022.

What is a spermatocele?

A spermatocele is a fluid collection or cyst that forms in the epididymis behind your testicles. The cyst contains a milky liquid that usually has sperm in it. The cyst will feel like a smooth mass near your testicles that you can move inside your scrotum. The mass is not cancer. A spermatocele is usually not painful, but you may feel heaviness in your scrotum. The area may also be swollen.


What increases my risk for a spermatocele?

The cause of your spermatocele may not be known. Trauma, blockage, infection, or inflammation in your scrotum may increase your risk.

How is a spermatocele diagnosed and treated?

  • To diagnose a spermatocele, your healthcare provider will feel your testicles and other parts of your scrotum. They or she will check for lumps and pain. Your provider may use an ultrasound if you have a lump to see if it is a spermatocele cyst. Spermatoceles are sometimes found during a routine physical exam.
  • Treatment for a spermatocele may not be needed. The cyst usually goes away on its own. Your provider may recommend medicine to decrease pain or swelling if you develop discomfort. They or she may be able to remove the cyst if it becomes large. Talk to your provider about the risks of having a spermatocele removed. The procedure may cause infertility (problems fathering children).

What is a testicular self-exam?

A testicular self-exam is a monthly check of your testicles and scrotum. Your provider may ask you to check for changes, lumps, or pain. Ask for more information on how to do a testicular self-exam.

When should I seek immediate care?

  • You have sudden, severe pain in your scrotum or testicle.

When should I contact my healthcare provider?

  • The cyst does not go away or gets bigger.
  • The cyst becomes painful or causes discomfort.
  • You have questions or concerns about your condition or care.

Care Agreement

You have the right to help plan your care. Learn about your health condition and how it may be treated. Discuss treatment options with your healthcare providers to decide what care you want to receive. You always have the right to refuse treatment. The above information is an educational aid only. It is not intended as medical advice for individual conditions or treatments. Talk to your doctor, nurse or pharmacist before following any medical regimen to see if it is safe and effective for you.

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Further information

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