Slide show: Sun damage
Image of lentigo maligna
Previous Next 10 of 10 Lentigo maligna

Lentigo maligna is a type of growth that develops in areas of long-term sun exposure, such as your face, arms or legs. Lentigo maligna starts as a brown flat spot with an irregular shape that slowly gets bigger. Eventually the spot may develop into melanoma, a type of skin cancer that begins in the top layer of skin and then invades the underlying skin layer. See your doctor if you notice:

  • A new skin growth
  • A change in an existing mole
  • Any skin changes that seems unusual

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See more Multimedia Aug. 18, 2022