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Melanoma is the most dangerous type of skin cancer; it develops from the melanin-producing cells known as melanocytes. [1] It typically occurs in the skin, but may rarely occur in the mouth, intestines, or eye (uveal melanoma).
Causes of melanoma. Ultraviolet light exposure from the sun or from tanning beds causes most melanomas. Melanoma may appear at a spot where you have an existing mole. But if an unusual spot shows ...
Melanoma has one of the higher survival rates among cancers, with over 86% of people in the UK and more than 90% in the United States surviving more than 5 years. [ 18 ] [ 19 ] Skin cancer is the most common form of cancer, globally accounting for at least 40% of cancer cases.
To prevent and reduce the risk of melanoma caused by UV radiation, the American Academy of Dermatology and the National Cancer Institute recommend: Staying out of the sun between 10 a.m. and 4 p.m. standard time (or whenever one's shadow is shorter than one's height) Wearing long sleeves and trousers; Wearing hats with a wide brim; Applying ...
Melanoma symptoms and signs. Melanoma tumors tend to be black or brown, but can sometimes be pink, tan or white. Anyone can get melanoma, but people with light skin are at greater risk. Causes of ...
However, a melanocytic nevus is benign, and melanoma is malignant. Most melanocytic nevi never evolve into a cancer, with the lifetime risk for an individual nevus being 1 in 3000 for men and 1 in 11 000 for women. [5] Moreover, dermatologists have a standardized system for determining whether a skin lesion is suspicious for malignant melanoma.
Subungual melanomas account for only 0.7% to 3.5% of all malignant melanomas worldwide. A patient’s survival chances depend on the stage of cancer at diagnosis and how far it’s spread.
Superficial spreading melanoma (SSM) is a type of skin cancer that typically starts as an irregularly edged dark spot typically on sun-exposed part of the body. [ 2 ] [ 3 ] The colour may be variable with dark, light and reddish shades; occasionally no color at all. [ 2 ]