Changes in Fibromas: When to Worry About Skin Cancer

Fibroma discoloration

Hello doctor, I have a tendency to develop dermatofibromas (which I have been told by a doctor are benign).
Recently, I noticed a spot on my back that has turned black and has hair tangled in it.
It resembles a mushroom cap.
After removing the hair, it returned to the original shape of a dermatofibroma, but it feels like a scab from an injury.
The color is black and there are no irregularities around it.
Could this be melanoma or skin cancer? I'm worried.
There are no clinics open on weekends, so I would like to understand this better before deciding which specialty to consult.
Thank you.

Dongdong, 40~49 year old female. Ask Date: 2022/10/16

Dr. Wu Yuxin reply Dermatology

First, schedule an appointment with a dermatologist to have the condition evaluated by a specialist, and then determine the next steps.

Reply Date: 2022/10/16

More Info

When it comes to skin fibromas, or dermatofibromas, it's important to understand that while most of these growths are benign, any changes in their appearance or sensation can be concerning. In your case, the recent changes you've observed in your fibroma, particularly the darkening of the color and the texture resembling a scab, warrant careful consideration.

Dermatofibromas are typically firm, raised nodules that can vary in color from brown to tan. They are often asymptomatic, meaning they do not usually cause pain or discomfort. However, if you notice changes such as increased pain, itching, or changes in color, it could indicate a need for further evaluation. The fact that your fibroma has turned black and feels like it has scabbed over could potentially raise concerns about malignancy, particularly if it exhibits characteristics that are atypical for a benign fibroma.

One of the most serious concerns with skin lesions is the possibility of melanoma, a type of skin cancer that can develop from existing moles or skin lesions. Melanoma can present with changes in color, size, shape, or texture, and it often has irregular borders. The fact that your lesion has changed color and has a different texture could be a sign that it needs to be evaluated by a dermatologist.

In general, if you have a skin lesion that is changing in appearance, it is advisable to seek medical attention. A dermatologist can perform a thorough examination and may recommend a biopsy to determine whether the lesion is benign or malignant. This is particularly important if the lesion has characteristics that are concerning, such as asymmetry, irregular borders, multiple colors, or changes in size.

In your case, since you mentioned that the lesion has a "mushroom-like" appearance and has become darker, it is essential to consult with a dermatologist as soon as possible. They can provide a definitive diagnosis and determine the appropriate course of action. If you are unable to see a dermatologist immediately due to weekend closures, consider visiting an urgent care clinic or a hospital emergency department if you feel the situation is urgent.

In summary, while many skin fibromas are benign, any significant changes in their appearance or sensation should be taken seriously. It is crucial to have any concerning lesions evaluated by a healthcare professional to rule out skin cancer, including melanoma. Early detection and treatment are key to managing skin cancers effectively, so do not hesitate to seek medical advice.

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