Much UV radiation, light skin, and impaired immune system are risk factors for the now rapidly growing, aggressive form of skin cancer MCC.
"A significant increase," says John Paoli, dermatologist and associate professor at the Sahlgrenska Academy, in a press release.
MCC is a relatively rare form of skin cancer, nearly 50 cases per year, according to the researchers' latest figures, nor so well studied, such as malignant melanoma.
The tumors are fast-growing, life-threatening allowing an early diagnosis is crucial.
MCC often begins with a sudden growth of a red, pink or red violet and relatively hard bumps on or under the skin, which quickly grows into a lump.
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