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Page 1 of 2 Edmonton's Cosmetic Surgery Clinic
MELANOMA - THE CANCEROUS MOLE
What is Melanoma?
Melanoma or a "cancerous mole" is a less common type of skin cancer arising from the skin's pigment cells. Melanocytes produce a pigment called melanin that gives the skin its color and protects it from sun damage. Darker skin has more melanin and more protection. Melanocytes often cluster together and form moles (nevi). Most moles are benign, but some may go on to become malignant melanomas.
Melanoma is one of the most dangerous skin cancers but good treatments are available and many patients make excellent and full recovery. It is important to examine your skin regularly - the moles that you have on your body are yours and you need to know them well. Any new mole that appears or if any of the existing moles change - a visit to your doctor or a dermatologist would be warranted.
Are there different types of melanoma?
YES - There are several types of melanoma. These types are distinguished by their pattern of growth (whether they grow outward or downward), location and prognosis.
There are 4 different types of melanoma:
- Superficial Spreading Melanoma - This is the most common variant of melanoma accounting for 2/3 of all melanomas. It often presents as a dark brown or black flat stain on the skin or appears as a change from a pre-existing mole.
- Nodular Melanoma - This type of melanoma is usually not related to a pre-existing mole. It generally presents as a smooth bump (papule or nodule) that is often blue-black in color. This type of melanoma can sometimes grow rapidly and spread to the lymph nodes.
- Acral-Lentiginous Melanoma - This type of melanoma occurs on the palms of the hand, on the soles of the feet or under nail beds, and can grow and spread quickly. It is the most common melanoma in dark-skinned. It is important that any mole on the hands and feet be assessed, as these are not usual locations for the moles.
- Lentigo Maligna Melanoma - This form of melanoma is mostly found on the most sun-damaged skin such as face of the older individuals.
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