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Published April/06/2026 5:58 PM
π©Ί Medically reviewed by the Health Decoded Guide Editorial Team · Last reviewed: August 2026
π Quick Summary
Varicocele and spermatocele are common causes of scrotal lumps.
Both are usually harmless but can feel different and have different causes.
1οΈβ£ Introduction
Varicocele and spermatocele are non-cancerous swellings in the scrotum.
• varicocele = enlarged veins around the testicle
• spermatocele = fluid-filled cyst near the epididymis
• often discovered during self-exam
π Not all scrotal lumps are dangerous—but they should be checked.
2οΈβ£ How it happens
Both conditions develop differently.
• varicocele: veins become enlarged due to poor blood flow
• spermatocele: fluid collects in a cyst from the epididymis
• both create a noticeable swelling or lump
π The underlying mechanism explains why they feel different on examination.
3οΈβ£ Types
- feels like a “bag of worms”
- more common on the left side
• Spermatocele
- smooth, round lump
- usually painless and separate from the testicle
π The texture and location are key differences.
4οΈβ£ Common causes
• Varicocele
- faulty valves in veins
- increased pressure in scrotal veins
• Spermatocele
- blockage or disruption in sperm ducts
- fluid accumulation
5οΈβ£ Symptom explanation
• scrotal swelling or lump
• heaviness (more common with varicocele)
• mild discomfort
π Symptoms occur due to pressure, fluid, or enlarged veins.
6οΈβ£ Associated symptoms
• infertility (varicocele in some cases)
• painless lump (spermatocele)
• size change over time
• discomfort after standing long
π Varicocele may affect fertility, while spermatocele usually does not.
7οΈβ£ When it becomes dangerous π¨
• rapid growth of lump
• significant pain
• hard lump inside the testicle
π These may indicate:
• a different condition (e.g. tumor)
• need for urgent medical evaluation
8οΈβ£ Management / treatment
• observation if no symptoms
• pain relief if needed
• surgery (varicocele repair or cyst removal) if problematic
9οΈβ£ Diagnosis
• physical examination
• ultrasound of the scrotum
• fertility tests if indicated
π Ultrasound helps confirm the type of swelling.
π’ Important message
Varicocele and spermatocele are common and usually harmless.
π Any new lump should still be checked to rule out serious causes.
FAQ
• Can varicocele affect fertility?
Yes, in some men it may affect sperm production.
• Does spermatocele need treatment?
Usually not, unless it causes discomfort.
• Can hydrocele affect fertility?
Usually not, but very large or complicated hydroceles may need assessment.
• Can these swellings go away on their own?
Some may improve, but persistent or increasing swelling should be checked.
• How do doctors tell them apart?
Examination is often enough, but an ultrasound may be needed to confirm the cause.
π Related Health Topics
• Testicular lump
• Testicular pain
• Testicular Torsion
• Epididymitis
• Male Infertility
π Medical References
• Mayo Clinic. Scrotal masses – Symptoms and causes.
• Mayo Clinic. Varicocele – Symptoms and causes.
• Mayo Clinic. Spermatocele – Symptoms and causes.
• Cleveland Clinic. Varicocele: Symptoms & Treatment.
• Cleveland Clinic. Spermatocele: Causes, Symptoms, Diagnosis & Treatment.
β οΈ Medical Disclaimer
This article is for educational purposes only and does not replace professional medical advice.
If you have symptoms or concerns, please consult a qualified healthcare professional.