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Melanoma is frequently referred to as malignant melanoma. However, the medical community stresses that there is no such thing as a 'benign melanoma' and recommends that the term 'malignant melanoma' should be avoided as redundant. [7] [8] [9] About 25% of melanomas develop from moles. [2]
Skin cancers result in 80,000 deaths a year as of 2010, 49,000 of which are due to melanoma and 31,000 of which are due to non-melanoma skin cancers. [74] This is up from 51,000 in 1990. [74] More than 3.5 million cases of skin cancer are diagnosed annually in the United States, which makes it the most common form of cancer in that country.
Amelanotic melanoma is a type of skin cancer in which the cells do not make any melanin. [1]: 696 [2] They can be pink, red, purple or of normal skin color, and are therefore difficult to diagnose correctly. They can occur anywhere on the body, just as a typical melanoma can.
Any diagnosis of melanoma is cancer even if the term ‘malignant’ is not used before it.
However, undifferentiated benign tumors and differentiated malignant tumors can occur. [28] [29] Although benign tumors generally grow slowly, cases of fast-growing benign tumors have also been documented. [30] Some malignant tumors are mostly non-metastatic such as in the case of basal-cell carcinoma. [31]
FIRST PERSON: Like Sarah Ferguson, Rebecca Tidy has experienced malignant melanoma. She shares how her GP dismissed the danger twice – and explains why getting yourself checked out could just ...
Prolonged exposure to ultraviolet radiation from the sun can lead to melanoma and other skin malignancies. [76] Clear evidence establishes ultraviolet radiation, especially the non-ionizing medium wave UVB, as the cause of most non-melanoma skin cancers, which are the most common forms of cancer in the world. [76]
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