Should You Remove Moles in Your Armpit? the Risks

Should moles in the armpit be removed?

Hello Doctor: I have had a mole in my armpit since childhood, approximately 2mm in size, slightly raised and not flat, with a relatively uniform brown color.
Recently, during the summer, I have been wearing sleeveless shirts more often and noticed that it seems to have become slightly more raised, about 2mm.
The color around it is lighter, closer to my skin tone, while the center is darker, a deep gray.
The mole is soft and does not cause any pain or itching.
Recently, I have heard more about melanoma and that many people are getting it, with many suggestions that moles in areas prone to friction should be removed to prevent potential changes.
I would like to ask the doctor if moles in the armpit are really more prone to changes?

Niming, 20~29 year old female. Ask Date: 2016/10/01

Dr. Wu Yuxin reply Dermatology

No, each mole still needs to be observed individually.

Reply Date: 2016/10/01

More Info

When considering whether to remove a mole in your armpit, it's essential to weigh the potential risks and benefits, especially given your concerns about changes in the mole's appearance and the increasing awareness of melanoma. Here’s a comprehensive overview of the factors to consider:

Understanding Moles and Their Risks
Moles, or nevi, are common skin growths that can vary in size, shape, and color. Most moles are benign, meaning they are not cancerous. However, certain characteristics can indicate a higher risk of melanoma, a serious form of skin cancer. The ABCDE rule is a helpful guideline for assessing moles:
- Asymmetry: One half of the mole does not match the other.

- Border: The edges are irregular, ragged, or blurred.

- Color: The color is not uniform and may include shades of brown, black, or even red, white, or blue.

- Diameter: The mole is larger than 6mm (about the size of a pencil eraser).

- Evolving: The mole is changing in size, shape, or color.

In your case, the mole is 2mm, which is relatively small, but you mentioned it has become slightly more raised and has a color variation. While these changes can be benign, they warrant further evaluation.

Location and Friction
Moles located in areas prone to friction, such as the armpit, may be at a higher risk of irritation or injury. Continuous friction from clothing or movement can lead to changes in the mole, including inflammation or even ulceration. This irritation can sometimes cause benign moles to change in appearance, but it can also increase the risk of malignant transformation in rare cases.

Recommendations for Evaluation
1. Consult a Dermatologist: The best course of action is to consult a dermatologist who can perform a thorough examination of the mole. They may recommend a dermatoscopic evaluation, which allows for a more detailed view of the mole's structure.

2. Consider a Biopsy: If the mole shows concerning features, a biopsy may be necessary. This involves removing a small sample of the mole for laboratory analysis to determine if it is benign or malignant.

3. Monitor Changes: If the mole is not removed, it is crucial to monitor it for any changes in size, shape, color, or texture. Keeping a photographic record can help track any developments over time.

Risks of Removal
If you decide to proceed with mole removal, consider the following:
- Surgical Risks: As with any surgical procedure, there are risks involved, including infection, scarring, and potential changes in skin sensation.

- Pathological Analysis: Removing the mole allows for a definitive diagnosis. If it is found to be malignant, early intervention can significantly improve outcomes.

Conclusion
While the risk of melanoma in a small, benign-appearing mole is generally low, the changes you've observed and the location of the mole do warrant further investigation. Consulting with a dermatologist will provide you with personalized advice based on a professional assessment. If removal is recommended, it can provide peace of mind and ensure that any potential issues are addressed promptly. Remember, early detection is key in managing skin cancer effectively.

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