Should I Get a Skin Biopsy for My Enlarged Mole?

A mole has enlarged?

I noticed that a mole seems to have enlarged after my shower; it is about 0.5 centimeters in diameter.
I've been getting moles frequently, but this particular mole is a faint black, flat, and round.
Should I have it biopsied? Previously, when I visited a dermatology clinic, they suggested monitoring it or said that if I was concerned, I could have it biopsied.
Should I go ahead with the biopsy, or should I continue to observe it for signs like bleeding or elevation? Thank you, doctor.

Li Zimin, 20~29 year old female. Ask Date: 2022/08/31

Dr. Wu Yuxin reply Dermatology

No lesions were observed, and it is not possible to determine the condition.
If you are very concerned, please seek medical attention promptly.

Reply Date: 2022/08/31

More Info

When it comes to skin health, particularly concerning moles or nevi, it is crucial to approach any changes with caution. The fact that you have noticed an enlargement of your mole to approximately 0.5 cm in diameter, along with the observation that you have been developing new moles, warrants a careful evaluation.
Moles can change in size, shape, and color over time, and while many changes are benign, some can indicate potential skin cancer, particularly melanoma. The characteristics of your mole—being a faintly colored, flat, and round shape—are generally less concerning than moles that are asymmetrical, have irregular borders, multiple colors, or have recently changed in texture (e.g., becoming raised or bleeding). However, the increase in size is a significant factor to consider.

The recommendation to observe the mole or to have a biopsy can depend on several factors, including your personal and family history of skin cancer, the characteristics of the mole, and any other symptoms you may be experiencing. If your dermatologist previously suggested monitoring the mole, it may have been based on its appearance at that time. However, since you have noticed a change, it is reasonable to seek further evaluation.

A skin biopsy is a procedure where a small sample of skin is removed for laboratory analysis. This can provide definitive information about whether the mole is benign or malignant. If you have any concerns about the mole, especially if it has changed in size or appearance, it is advisable to consult a dermatologist again. They can assess the mole in person and determine if a biopsy is necessary.
In general, if you notice any of the following changes in a mole, you should seek medical advice promptly:
1. Size: If the mole is larger than 6 mm (about the size of a pencil eraser).

2. Shape: If the edges are irregular or the shape is asymmetrical.

3. Color: If there are multiple colors or if the color is uneven.

4. Elevation: If the mole becomes raised or develops a crust.

5. Symptoms: If it itches, bleeds, or becomes painful.

In your case, since the mole has increased in size, it would be prudent to have it evaluated by a dermatologist. They may recommend a biopsy to rule out any serious conditions, especially if there is any suspicion based on their examination.

In conclusion, while monitoring is a valid approach for some moles, any noticeable changes, particularly enlargement, should prompt a re-evaluation. It is always better to err on the side of caution when it comes to skin changes, especially with a history of developing new moles. A dermatologist can provide the best guidance tailored to your specific situation, ensuring that any potential issues are addressed promptly and appropriately.

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