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Spermatocele – Causes, Symptoms and Treatment

A spermatocele is a benign, fluid-filled cyst that develops in the epididymis. It is usually painless and harmless, requiring no treatment in most cases.

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Things worth knowing about "Spermatocele"

A spermatocele is a benign, fluid-filled cyst that develops in the epididymis. It is usually painless and harmless, requiring no treatment in most cases.

What is a Spermatocele?

A spermatocele (also called a spermatocyst) is a benign cyst that forms in the epididymis, the coiled tube located behind each testicle. It is filled with a milky white fluid containing dead or inactive sperm cells. Spermatoceles are generally harmless, painless, and do not require treatment in most cases.

Causes

The exact cause of a spermatocele is not always clear. Contributing factors may include:

Blockage or obstruction in the ducts of the epididymis
Inflammation of the epididymis (epididymitis)
Previous injuries or surgeries in the scrotal area
Congenital abnormalities of the reproductive ducts

Symptoms

Most spermatoceles do not cause any noticeable symptoms. Possible signs include:

A palpable, soft, round lump behind or above the testicle
A feeling of heaviness in the scrotum if the cyst is large
Occasional mild discomfort or pressure in the affected area

Important: Any new lump or swelling in the scrotum should be evaluated by a doctor to rule out serious conditions such as testicular cancer.

Diagnosis

Diagnosis of a spermatocele typically involves:

Physical examination: The doctor palpates the swelling to assess its characteristics.
Scrotal ultrasound: This is the primary imaging method. A spermatocele appears as a smooth, well-defined, fluid-filled structure separate from the testicle.
Transillumination: Shining a light through the scrotum to confirm the cyst is filled with fluid rather than solid tissue.

Treatment

Since spermatoceles are benign and usually asymptomatic, treatment is often not necessary. Regular monitoring with check-up examinations is typically recommended.

Surgical Treatment (Spermatocelectomy)

Surgery may be considered if the cyst grows significantly, causes pain, or interferes with daily activities. The procedure, known as a spermatocelectomy, involves surgical removal of the cyst under local or general anesthesia. Some swelling and discomfort after the procedure is normal and resolves within a few days.

Sclerotherapy

An alternative to surgery is sclerotherapy, in which a chemical solution is injected into the cyst to shrink it. This approach is used less frequently due to the risk of scarring the reproductive ducts.

Effects on Fertility

In most cases, spermatoceles do not negatively affect male fertility. However, surgical procedures in this area carry a small risk of damage to the reproductive ducts, so treatment decisions should be carefully considered in men who wish to father children.

References

Schroeder-Printzen, I. et al. - Andrologie: Grundlagen und Klinik der reproduktiven Gesundheit des Mannes. Springer Verlag, 2013.
Ringdahl, E., Teague, L. - Testicular torsion. American Family Physician, 74(10): 1739-1743, 2006.
European Association of Urology (EAU) - Guidelines on Male Infertility. EAU Guidelines, 2023. https://uroweb.org/guidelines/male-infertility

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