a Lump on the Dorsal Side of the Penis: Causes and Solutions - Urology

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There is a lump on the dorsal side of the penis?


Doctor, I would like to ask about a lump I discovered on the left side of the dorsal area at the base of my penis while showering.
It is about the size of a mung bean and does not hurt when touched.
I have been engaging in continuous masturbation since June 1st (once a day, with a day or two off).
I would like to know the cause of the lump and how to address it.

Mr. Hsu, 10~19 year old female. Ask Date: 2022/06/10

Dr. Jian Weihong reply Urology


Hello: Generally, there won't be any issues without injury.
If there is redness, the possibility of infection is higher, so it's important to maintain cleanliness.
If there is no redness but it continues to enlarge, you should see a urologist for an examination.
Wishing you good health.

Reply Date: 2022/06/10

More Info


When it comes to noticing a lump on the dorsal side of the penis, particularly at the base, there are several potential causes to consider. It’s important to approach this issue with a clear understanding of the anatomy and possible conditions that could lead to such a finding.

Firstly, the lump you described, which is about the size of a green bean and is not painful upon touch, could be a number of benign conditions. One common cause is a sebaceous cyst, which is a small, non-cancerous bump that can occur when a sebaceous gland becomes blocked. These cysts are typically harmless and may not require treatment unless they become infected or bothersome.

Another possibility is a condition known as a penile papule, which are small, dome-shaped bumps that can appear on the penis and are usually harmless. They are often mistaken for warts or other lesions but are a normal anatomical variant.

Additionally, the lump could be related to a condition called Peyronie's disease, which involves the development of fibrous scar tissue inside the penis, leading to curved, painful erections. However, this typically presents with pain or changes in the curvature of the penis during erections, which you did not mention.

Given that you have been engaging in frequent masturbation, it’s also worth considering that repetitive friction or trauma could lead to localized swelling or irritation, which might present as a lump. This is often self-limiting and resolves with rest and reduced activity.

In terms of management, if the lump is not causing pain or discomfort, it may be reasonable to monitor it for changes. However, if you notice any of the following, it would be advisable to seek medical attention:
1. Change in Size or Shape: If the lump grows larger or changes in appearance.

2. Pain or Discomfort: If it becomes painful or tender.

3. Changes in Urination or Sexual Function: If you experience difficulties with urination or erections.

4. Signs of Infection: Such as redness, warmth, swelling, or discharge.

A healthcare professional, particularly a urologist, can provide a thorough examination and may recommend imaging studies or a biopsy if there is any concern about the nature of the lump. They can also offer reassurance and treatment options if necessary.

In conclusion, while the lump you have described is likely benign, it is essential to keep an eye on it and consult a healthcare provider if you have any concerns or if it changes in any way. Regular self-examinations and being aware of your body can help you catch any potential issues early on. Remember, it’s always better to err on the side of caution when it comes to your health.

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