Does melanoma protrude above the surface of the skin?

Written by Huang Ling Juan
Dermatology
Updated on April 18, 2025
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Melanoma is generally raised above the surface of the skin. Melanoma is a type of special malignant tumor with a high mortality rate. It usually arises from moles or pigmented spots on the skin that, after intense irritation or specific radiation exposure, undergo changes, leading to gradual growth. Early detection of melanoma offers a significant chance of cure. Melanoma is typically confined to the outer layer of the skin or epidermis. Once melanoma spreads, it becomes difficult to treat, and the chances of survival decrease. Therefore, if you suspect that you have melanoma, it is crucial to visit a dermatology department at a reputable hospital for diagnosis and to undergo surgical removal followed by a pathological examination.

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Melanoma stage IV is the fourth stage.

Melanoma stage IV refers to the fourth stage of melanoma, where IV represents the Roman numeral for 4. Stage IV melanoma means that the melanoma is no longer confined to the local lesion but has metastasized to distant organs. The most common locations for melanoma include the skin and mucous membranes, with typical metastatic sites including the lungs, brain, liver, etc. Once diagnosed as stage IV, there are no indications for surgical treatment. Treatment primarily involves a comprehensive approach combining chemotherapy, radiotherapy, targeted therapy, and immunotherapy.

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Melanoma CT manifestations

The CT manifestations of melanoma vary depending on the location of the tumor. Generally, melanomas that occur on the skin can appear on CT scans as mass-like lesions, and the scans can show whether there are any urgent conditions involving the surrounding nerves, blood vessels, and tissues. Some patients may only show CT imaging changes such as localized thickening of the skin. In melanomas that occur inside the skull or in the vulva, the CT mainly shows localized mass-like lesions. These lesions are typically low-density foci with poor blood supply around them, and they generally have an irregular shape.

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Written by Huang Ling Juan
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Is melanoma flat or raised?

Melanoma is generally raised and does not have a fixed shape. In the early stages of local growth, melanoma appears flat. As the tumor grows and proliferates, some protrusions may occur, but protrusions should not be equated with malignancy. If a previously flat mole suddenly becomes raised, one should be vigilant about the possibility of malignancy. However, a raised mole is not necessarily melanoma; there are some intradermal nevi or benign skin lesions, and other types of skin cancers can also manifest as raised changes. Therefore, if there are some melanocytic nevi on the skin that quickly develop symptoms such as ulceration, bleeding, pain, or itching, it is important to promptly visit a dermatology department at a standard hospital for an examination and, if necessary, surgical removal and pathological investigation.

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Is melanoma flat or raised?

Melanoma generally is not flat, also known as malignant melanoma, which is a highly malignant cancer originating from melanocytes, commonly occurring in the skin. Men over the age of 60 are a high-risk group, with the most commonly affected areas being the lower limbs and feet, followed by the trunk, head and neck, or upper limbs. Symptoms mainly include rapidly growing melanotic nodules. Initially, normal skin becomes heavily pigmented, or pigmented moles darken and increase in pigment. The skin lesions continually enlarge and harden, accompanied by itching and pain. The lesions of melanoma may be raised, patchy, or nodular, and some may even resemble cauliflower.

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Can a melanoma heal by itself if it ruptures?

Melanoma cannot heal itself once it has ruptured. Melanoma is a type of malignant tumor, and if melanoma occurs, it is crucial to cooperate actively with the doctor to perform excision surgery. After the surgical removal, pathological examination must be carried out, and treatment should be sought promptly to avoid delaying the condition. If there is bleeding, ulceration, pain, or a significant increase in the size of skin pigmented moles, it is highly suspect for malignant transformation, and one should promptly visit a dermatology department at a formal hospital for examination. If malignant transformation is possible, it is critical to perform surgery early and conduct a pathological examination. The symptoms of melanoma are related to the age of onset; in younger patients, it usually presents as itching, changes in the color of the lesions, and expanding borders, while older patients typically exhibit noticeable ulceration of the lesions.