«Melanoma, also known as malignant melanoma, is a type of cancer that develops from the pigment-containing cells known as melanocytes.[1] Melanomas typically occur in the skin, but may rarely occur in the mouth, intestines, or eye.[1][2] In women, they most commonly occur on the legs, while in men they are most common on the back.[2] Sometimes they develop from a mole with changes such as an increase in size, irregular edges, change in color, itchiness, or skin breakdown.[1]

The primary cause of melanoma is ultraviolet light (UV) exposure in those with low levels of skin pigment.[2][7] The UV light may be from either the sun or from other sources, such as tanning devices.[2] About 25% develop from moles.[2] Those with many moles, a history of affected family members, and who have poor immune function are at greater risk.[1] A number of rare genetic defects such as xeroderma pigmentosum also increase risk.[8] Diagnosis is by biopsy and analysis of any skin lesion that has signs of being potentially cancerous.[1]

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Modified: 4 months ago on Apr 13, 2019
personAlex Inside 23 lvl added it 4 months ago on Apr 13, 2019.