Spermatocele

A spermatocele is a small, usually painless cyst that forms on the epididymis, which is the tube that stores and transports sperm behind each testicle.

Causes and Risk Factors

The exact cause of a spermatocele is often unknown, but it may be related to a blockage in the epididymis or a problem with the way sperm is transported. Factors that may increase the risk of developing a spermatocele include:

  • Age: Spermatoceles are more common in men over 40 years old
  • Trauma to the testicles or epididymis
  • Inflammation or infection of the epididymis (epididymitis)
  • Blockage of the epididymis or vas deferens

Symptoms

A spermatocele may not cause any symptoms, but some men may experience:

  • A small, painless lump on the epididymis behind the testicle
  • Discomfort or pain in the testicle or epididymis
  • Abnormal semen analysis (e.g., low sperm count or motility)

Diagnosis

A spermatocele is typically diagnosed through a physical exam and medical history. The doctor may also perform:

  • Ultrasound: to confirm the presence of a cyst and rule out other conditions, such as testicular cancer
  • Semen analysis: to evaluate sperm quality and quantity

Treatment

Treatment for a spermatocele usually involves:

  • Watchful waiting: monitoring the cyst for changes in size or symptoms
  • Surgical removal: if the cyst is large, painful, or causing fertility problems
  • Sperm aspiration: removing sperm from the cyst to use for assisted reproductive techniques (e.g., in vitro fertilization)

Complications

If left untreated, a spermatocele may cause:

  • Fertility problems: due to blockage of sperm transport or abnormal semen quality
  • Chronic pain or discomfort: if the cyst becomes large or inflamed
  • Infection: if bacteria enter the cyst and cause an infection

Prevention

There is no sure way to prevent a spermatocele, but maintaining good testicular health through:

  • Regular self-exams: to detect any abnormalities or changes in the testicles
  • Safe sex practices: to reduce the risk of sexually transmitted infections (STIs) that can cause epididymitis
  • Avoiding trauma to the testicles: by wearing protective gear during sports and avoiding heavy lifting or straining

Article last updated on: 6th June 2025.
If you have any feedback, please get in touch.

Not just another AI Scribe.
Differentials. Guidance. Transcriptions. Notes.

Medical Disclaimer

The information provided is not intended to be a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of a physician or other qualified health provider with any questions you may have regarding a medical condition. Never disregard professional medical advice or delay seeking it because of something you have read on this site. We we do not guarantee, and assume no legal liability or responsibility for the accuracy, currency, or completeness of the information provided.