Soft Swelling on Left Testicle: Is It Cancer or Epididymitis? - Urology

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There is a swollen mass on the left testicle that feels soft, and the left side is larger than the right side?


There is a soft, enlarged mass on the left testicle that has been present for 2-3 months.
It is not painful and is larger than the right testicle, surrounding the left testicle.
Could this be testicular cancer, epididymitis, or an infection?

Xiao Chen, 10~19 year old female. Ask Date: 2018/04/20

Dr. Du Shixi reply Urology


Hello: This area cannot be diagnosed without examination, but it is mostly benign.
If you notice it getting larger, please seek medical attention promptly.
Wishing you good health.

Reply Date: 2018/04/20

More Info


When it comes to concerns about a soft swelling on the left testicle, it's important to approach the situation with a clear understanding of the potential causes and the necessary steps for diagnosis. Based on your description of a soft, enlarged mass that has been present for 2-3 months without pain, there are several possibilities to consider, including benign conditions as well as more serious concerns like testicular cancer.

Firstly, it’s crucial to note that the testicles and surrounding structures can have various normal anatomical features that might be mistaken for abnormalities. For example, the epididymis, which is a coiled tube located at the back of the testicle, can sometimes feel like a soft swelling. Additionally, conditions such as a hydrocele (fluid accumulation around the testicle) or a spermatocele (a cyst in the epididymis) can also present as soft, non-painful swellings.

Testicular cancer, while a serious concern, is relatively rare, especially in the absence of other symptoms such as pain, significant changes in size, or the presence of hard lumps. The majority of testicular masses are not cancerous. However, the fact that the swelling has been persistent for several months warrants further investigation.

Epididymitis, which is inflammation of the epididymis, typically presents with pain and swelling, often accompanied by redness and warmth in the affected area. Since you mentioned that there is no pain associated with the swelling, this condition may be less likely, but it cannot be completely ruled out without a proper examination.

Given the duration and characteristics of the swelling, it is highly advisable to seek a consultation with a urologist. A physical examination, along with imaging studies such as an ultrasound, can provide valuable information. An ultrasound is particularly useful in differentiating between solid masses and fluid-filled cysts, and it can help identify any abnormalities in the blood flow to the testicle, which can be indicative of certain conditions.

In summary, while the presence of a soft swelling on the left testicle could be concerning, it is essential to approach this with a comprehensive evaluation by a healthcare professional. The majority of testicular masses are benign, but only a thorough examination and appropriate imaging can provide a definitive diagnosis. If you have not already done so, please schedule an appointment with a urologist to discuss your symptoms and undergo the necessary tests. Early diagnosis and treatment are key to managing any potential issues effectively.

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