Moles and Birthmarks: Post-Removal Concerns and Pathology Options - Dermatology

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Moles, birthmarks


Hello, Doctor: I would like to ask you about a recent experience I had at the hospital where I underwent electrosurgery to remove moles.
For some of the larger moles, the doctor sent samples for dermatopathological examination, and the results were all benign.
However, for some moles, the doctor decided to use electrosurgery directly without sending samples for pathology.
I have read online that without pathology, it is impossible to confirm whether the moles are benign, which has led to some anxiety on my part.
Therefore, I would like to know if there are any follow-up methods to determine whether the moles that were treated with electrosurgery are benign.
After healing, is it possible to perform another biopsy on the area to confirm this? Thank you in advance for your response.

natsuki, 20~29 year old female. Ask Date: 2020/07/19

Dr. Wu Yuxin reply Dermatology


If you want to confirm, you should have chosen surgery from the beginning.
If there are remnants after electrocautery, then it would be possible to excise them again for pathological examination.

Reply Date: 2020/07/19

More Info


Understanding moles and birthmarks, especially after removal, is crucial for ensuring your peace of mind and health. It’s great that you’ve taken the step to have your moles evaluated, and I can understand your concerns about the ones that were not sent for pathological examination after being treated with electrosurgery.

When a mole or birthmark is removed, especially through methods like electrosurgery, the tissue is often destroyed rather than excised in a way that allows for further examination. This means that if the mole was not sent for pathology, there is no definitive way to confirm its nature post-removal. Pathological examination is essential because it allows a trained pathologist to examine the tissue under a microscope to determine if there are any abnormal cells or signs of malignancy.

If you have concerns about the moles that were treated but not sent for pathology, here are a few points to consider:
1. Monitoring the Site: After electrosurgery, it’s important to monitor the area for any changes. Look for signs such as new growth, changes in color, or any unusual symptoms like itching or bleeding. If you notice any of these changes, it’s advisable to consult your dermatologist.

2. Follow-Up Consultation: Schedule a follow-up appointment with your dermatologist. They can assess the area where the mole was removed and discuss your concerns. They may recommend further evaluation based on their findings.

3. Pathology Options Post-Removal: If the area has healed and you still have concerns, it is possible to perform a biopsy on the site if there is any suspicious tissue or if a new lesion develops. However, if the area is completely healed and there are no new concerns, a biopsy may not be necessary.

4. Understanding the Risks: While most moles are benign, some can develop into melanoma or other skin cancers. The risk factors for malignant transformation include changes in size, shape, color, or symptoms associated with the mole. If you have a family history of skin cancer or if you have many moles, you should be particularly vigilant.

5. Psychological Impact: It’s normal to feel anxious about the possibility of skin cancer, especially after a procedure. Consider discussing your feelings with your healthcare provider, who may offer reassurance or refer you to a counselor if needed.

6. Future Monitoring: Regular skin checks are essential, especially if you have a history of atypical moles or skin cancer. Dermatologists often recommend annual skin exams, but depending on your risk factors, they may suggest more frequent visits.

In summary, while you cannot retroactively send the previously treated moles for pathology, you can take proactive steps to monitor your skin and consult with your dermatologist for any concerns. If new lesions appear or if you notice any changes in the area where the moles were removed, do not hesitate to seek medical advice. Regular follow-ups and being vigilant about skin changes are key to early detection and peace of mind.

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