The difference between melanoma and moles

Written by Zhu Zhu

Dermatology

Updated on September 08, 2024

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Melanoma and moles are distinguishable; firstly, moles are generally smaller, while melanomas have a larger diameter. Secondly, the color of a mole is more uniform, whereas the color of a melanoma is inconsistent in depth. Furthermore, moles are typically symmetric in shape, while melanomas are asymmetric. Lastly, melanoma is a type of malignant tumor, whereas a mole is simply a skin condition.

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Is laser treatment or surgical removal better for melanoma?

Regarding whether laser treatment or surgical excision is better for melanoma, the answer is clear: surgical excision is better. Melanoma originates from melanocytes and is not limited to one layer of the skin. Therefore, for melanoma of the skin, the infiltration depth can sometimes be profound, reaching the dermis layer. Laser treatment sometimes only covers a superficial depth, which cannot achieve complete removal. Surgical excision can completely remove deeper infiltrative parts of the melanoma, and after the excision, complete tissues can be obtained for pathological examination, which helps in staging after the surgery and guides treatment post-surgery. Laser treatment does not offer these benefits. Therefore, current guidelines recommend surgical excision for the treatment of melanoma and do not recommend laser treatment.

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Melanoma deterioration symptoms

Patients with early-stage melanoma generally experience symptoms such as moles rapidly growing larger, changing in shape and color. Slightly more severe cases may exhibit signs like itching and bleeding. If the melanoma progresses, it might lead to non-healing ulcerations, repeated occurrences of satellite lesions, regional lymph node metastasis, and migratory metastasis. In advanced stages, patients may experience bone metastasis pain. Lung cancer metastasis might manifest as coughing and coughing up blood, and symptoms can vary depending on the site of metastasis.

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symptoms of melanoma bone metastasis

Once melanoma metastasizes, patients will experience significant pain, which will become increasingly severe and eventually unbearable. Having melanoma can also cause the bones to become brittle and prone to fractures and cracks. Once melanoma metastasizes, it also destroys the body's immune system, causing patients to suffer from long-term headaches and nausea, and making the body weaker.

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Can melanoma be detected by ultrasound?

Melanoma is a very serious disease, and if detected in its early stages, treatment should be sought promptly. If treatment is delayed, the effects of treating the disease in its advanced stages are not very good or significant. Melanoma is a type of malignant tumor that is prone to occurrence and poses a significant risk, endangering life. Generally, if melanoma is being tested, the Vacca double PAP immunoenzymatic marking method is used for detection.

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How long does it take for melanoma to develop from early stage to advanced stage?

From what we observe now, in the early stages of illness, melanomas are typically found on the extremities such as hands, feet, the underside of feet, under fingernails, and particularly on the big toe. Initially, they might appear simply as a black spot or a lesion. About two to three years later, there might be swelling at the site of the lesion or black spot. Then, within another five to six months, it may ulcerate, indicating that the condition has worsened.