a Lump at the Base of the Penis: When to Seek Medical Advice

A lump at the base of the penis?

At the end of last month, I noticed a bubble-like growth at the base of my penis during an erection.
It enlarges with an erection and moves when pressed, but it shrinks when not erect.
It is not painful and appears to be located under the skin, with a color that looks somewhat greenish compared to the surrounding skin.
I am unsure if this is due to its position near a vein.
I would like to know what this issue might be and whether I need to seek medical attention.

Li, 20~29 year old female. Ask Date: 2020/08/18

Dr. Wu Shuyu reply Urology

Hello, it is difficult to make a judgment based solely on your description.
Please visit the urology outpatient clinic for evaluation.
Thank you.

Reply Date: 2020/08/18

More Info

When it comes to noticing a lump at the base of the penis, especially one that changes size with an erection and is movable, it is essential to approach the situation with caution and awareness of potential underlying issues. The characteristics you describe—a lump that resembles a blister, changes in size with arousal, and is not painful—could indicate several possibilities, but it is crucial to seek medical advice for an accurate diagnosis.

One potential explanation for the lump could be a condition known as a penile cyst or a sebaceous cyst. These are generally benign growths that can occur when a sebaceous gland becomes blocked. They are typically painless and can vary in size. However, their presence can sometimes lead to anxiety, especially if they change in size or appearance.

Another possibility could be a varicocele, which is an enlargement of the veins within the scrotum, similar to varicose veins. While varicoceles are more commonly associated with the scrotum, they can sometimes present as lumps in the genital area. They are usually not painful but can cause discomfort in some cases.

Additionally, the lump could be related to a condition known as penile fibromatosis or Peyronie's disease, where fibrous scar tissue develops in the penis, leading to lumps and curvature during erections. This condition can be associated with pain or discomfort, but it is not always the case.

It is also important to consider the possibility of a sexually transmitted infection (STI) or other infectious processes that could lead to lumps or lesions in the genital area. While you mentioned that the lump is not painful, some STIs can present with asymptomatic lesions.

Given the various possibilities, it is advisable to seek medical attention. A healthcare provider, particularly a urologist, can perform a physical examination and may recommend imaging studies or other diagnostic tests to determine the nature of the lump. Early evaluation is crucial, especially if there are any changes in size, color, or if new symptoms develop, such as pain, discharge, or changes in urination.

In summary, while the lump you describe may not seem alarming at first glance, it is essential to consult a healthcare professional to rule out any serious conditions and to receive appropriate guidance. Early intervention can lead to better outcomes and peace of mind. Remember, it is always better to err on the side of caution when it comes to changes in your body, especially in sensitive areas such as the genital region.

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