Male Gynecomastia and Inverted Nipple Concerns - Breast and Thyroid

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Gynecomastia and inverted nipple issues?


Hello Doctor, I am a male.
Actually, about 15 years ago, when I was in the 9th grade, I discovered a small oval hard lump in my left breast.
At that time, since there was no discomfort or visible difference, and being young, I didn't dare to mention it, so I left it alone.
However, it has gradually increased in size over time.
Now, it seems that I can no longer feel its size, and possibly because of this, my left breast is consistently larger than the right side.
It's not extremely noticeable, but upon closer inspection, the difference can be felt.
I am not sure when it started, but I have noticed in the past couple of years that my left nipple has a slight indentation and only protrudes when stimulated or touched, generally remaining level with the areola, which is different from the right side.
I am beginning to suspect whether there is a chance this could be breast cancer.
Are these symptoms indicative of gynecomastia, or could there be other causes? I plan to visit a breast surgeon soon, but I would like to hear your professional opinion on whether this phenomenon is normal.
Thank you very much.

Zhan, 30~39 year old female. Ask Date: 2024/04/15

Dr. Yuan Tianmin reply Breast and Thyroid


Based on your description, it doesn't seem to resemble breast cancer; it appears more aligned with the phenomenon known as gynecomastia.
If there is not a significant difference between the two nipples, observation should be sufficient.

Reply Date: 2024/04/15

More Info


Gynecomastia, or the enlargement of breast tissue in males, is a condition that can be concerning for many individuals. It can manifest as a small lump or a more pronounced enlargement of one or both breasts. In your case, you mentioned noticing a small oval hard lump in your left breast since you were in junior high school, which has gradually increased in size over the years. Additionally, you observed that your left breast is slightly larger than the right and that your left nipple has developed a slight inversion that requires stimulation to protrude.

First and foremost, it’s important to understand that gynecomastia can occur due to various reasons, including hormonal imbalances, certain medications, and underlying health conditions. The condition is often linked to an imbalance between estrogen and testosterone levels in the body. In males, testosterone is the dominant hormone, but all males also produce a small amount of estrogen. If the levels of estrogen increase or testosterone decreases, it can lead to the development of breast tissue.

In your case, the gradual increase in size of the left breast and the difference in size between the two breasts could indeed be indicative of gynecomastia. However, it is essential to differentiate between gynecomastia and other potential issues, such as breast cancer, especially since you mentioned concerns about the possibility of cancer due to the changes in your nipple.

While breast cancer is rare in men, it can occur, and any noticeable changes in breast tissue should be evaluated by a healthcare professional. The fact that you have a hard lump and a change in the appearance of your nipple warrants further investigation. It is good that you plan to see a breast surgeon, as they can perform a thorough examination and may recommend imaging studies, such as a mammogram or ultrasound, to assess the breast tissue more closely.

In terms of what you might expect during your visit, the healthcare provider will likely take a detailed medical history, including any medications you are taking, family history of breast disease, and any other symptoms you may be experiencing. They may also perform a physical examination to assess the breast tissue and check for any other abnormalities.

If gynecomastia is diagnosed, treatment options can vary depending on the severity of the condition and the underlying cause. In many cases, gynecomastia may resolve on its own, especially if it is related to hormonal changes during puberty. However, if the condition is persistent or causing significant discomfort or psychological distress, treatment options may include medication to address hormonal imbalances or surgical intervention to remove excess breast tissue.

It is also worth noting that lifestyle factors, such as obesity, alcohol consumption, and the use of certain drugs (including anabolic steroids and some medications for heart conditions), can contribute to the development of gynecomastia. Addressing these factors may help alleviate the condition.

In summary, while your symptoms may suggest gynecomastia, it is crucial to consult with a healthcare professional to rule out any serious conditions, including breast cancer. Early evaluation and diagnosis can lead to appropriate management and peace of mind. Your proactive approach to seeking medical advice is commendable, and I encourage you to follow through with your appointment to ensure your health and well-being.

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