a Movable Lump at the Base of the Penis: What You Need to Know - Urology

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There is a small round lump at the base of the penis?


Hello doctor, I have a question.
Recently, I noticed a small movable round lump at the base of my penis during an erection, approximately 0.3 cm in size.
It is not painful.
I have done some research and it seems like it could be a smooth muscle tumor or a sebaceous cyst.
If that is the case, does it need to be surgically removed, or will it resolve on its own? Thank you for your help, doctor.

Jack5566, 20~29 year old female. Ask Date: 2017/12/28

Dr. Du Shixi reply Urology


Hello: If it is a smooth muscle tumor or a sebaceous cyst, the chances of it disappearing are low.
If it does not go away after a week or if it increases in size, you should consult a urologist at the hospital.

Reply Date: 2017/12/28

More Info


When it comes to noticing a movable lump at the base of the penis, it’s important to approach the situation with caution and awareness. Based on your description, the lump you are feeling is approximately 0.3 cm in size, movable, and painless. This presentation can be indicative of several benign conditions, but it’s essential to consider the possibilities carefully.

One common cause of a movable lump in this area could be a sebaceous cyst, which is a small, non-cancerous bump beneath the skin. Sebaceous cysts are filled with a substance called sebum, which is produced by sebaceous glands. They are usually harmless and can sometimes resolve on their own without treatment. However, if they become inflamed or infected, they may require medical intervention.

Another possibility is a smooth muscle tumor, known as a leiomyoma. These tumors are typically benign and can occur in various locations in the body, including the genital area. Like sebaceous cysts, they are generally not painful and may not require removal unless they cause discomfort or other complications.

Additionally, the lump could be related to a lymph node or a small collection of tissue that is benign. Lymph nodes can sometimes become palpable due to infections or other benign processes, and they may fluctuate in size.

While the lump is currently painless and movable, it is crucial to monitor it for any changes. If the lump increases in size, becomes painful, or if you notice any other concerning symptoms (such as changes in urination, discharge, or skin changes), it would be advisable to seek medical evaluation. A healthcare provider can perform a physical examination and may recommend imaging studies or a biopsy if necessary to rule out any serious conditions.

In terms of treatment, if the lump is diagnosed as a sebaceous cyst or a benign smooth muscle tumor, and if it is not causing any symptoms, it may not require immediate removal. However, if you are concerned about its presence or if it becomes symptomatic, surgical removal might be considered. It’s important to have a discussion with your healthcare provider about the best course of action based on your specific situation.

In summary, while the lump you are experiencing may be benign, it is essential to keep an eye on it and consult with a healthcare professional for an accurate diagnosis and appropriate management. Regular check-ups and open communication with your doctor can help ensure that any potential issues are addressed promptly. Remember, your health is paramount, and seeking professional advice is always a wise decision when it comes to changes in your body.

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