Testicular Lumps: Causes, Symptoms, and When to Seek Help - Urology

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Testicular issues


During a shower, I noticed a lump on my left testicle that hasn't changed in size for over six months.
The testicle itself doesn't feel different, and sometimes it feels smaller.
After masturbation, the lump appears, and there is pain in the testicle.
What could this condition be, doctor?

Niming, 10~19 year old female. Ask Date: 2015/11/28

Dr. Xu Weikai reply Urology


Anonymous: Hello, I am unsure what illness this might be.
It could be a testicular tumor, possibly a hydrocele, or perhaps a spermatocele, among others.
If there are any unclear points, feel free to ask again, and we can discuss and research further.
Answers found online should only serve as a reference; if necessary, it is important to seek medical attention at a healthcare facility.
The Ministry of Health and Welfare Taitung Hospital cares about you.

Reply Date: 2015/11/28

More Info


When it comes to testicular lumps, it's essential to approach the situation with caution and understanding. The presence of a lump in the testicle can be concerning, and while many lumps are benign, some may indicate more serious conditions.
Firstly, it's important to recognize that testicular lumps can arise from various causes. The most common benign causes include epididymal cysts, which are fluid-filled sacs that can develop in the epididymis (the tube that carries sperm). These cysts are usually painless and may fluctuate in size. Another benign condition is a varicocele, which is an enlargement of the veins within the scrotum and can sometimes feel like a lump.
However, there are also more serious conditions to consider. Testicular cancer is one of the most concerning possibilities, especially in younger men. It often presents as a painless lump or swelling in the testicle. Other symptoms may include a feeling of heaviness in the scrotum, a dull ache in the lower abdomen or groin, or changes in the size or shape of the testicle.
In your case, you mentioned that the lump has not changed in size over six months and that it sometimes feels smaller after ejaculation. This fluctuation could suggest that it is not a solid mass, which is often a reassuring sign. However, the presence of pain, especially if it is associated with the lump, should not be overlooked. Pain can indicate inflammation or infection, such as epididymitis or orchitis, which are conditions that can cause swelling and discomfort in the testicles.

Given that you have been monitoring this lump for an extended period without significant changes, it is still crucial to seek medical advice. A healthcare provider will typically perform a physical examination and may recommend an ultrasound of the scrotum to assess the characteristics of the lump. This imaging test can help differentiate between benign and malignant conditions by providing detailed information about the lump's size, shape, and composition.

If the ultrasound suggests that the lump is suspicious, further evaluation may include blood tests to check for tumor markers associated with testicular cancer, such as alpha-fetoprotein (AFP) and human chorionic gonadotropin (hCG).
In summary, while many testicular lumps are benign, it is essential to have any new or changing lumps evaluated by a healthcare professional. Early diagnosis and treatment are crucial, especially for conditions like testicular cancer, which is highly treatable when caught early. If you experience any new symptoms, such as increased pain, changes in the lump, or other concerning signs, do not hesitate to seek medical attention. Your health and peace of mind are paramount, and a healthcare provider can offer the best guidance tailored to your specific situation.

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