Benign, non-harmful seborrheic keratoses of the scalp in an older gentleman.
  A large mole (congenital nevus) of the trunk of a young boy measuring three inches across. A biopsy or sample of the darkest area was taken to check for any cancerous cells or abnormal cells. Moles arising at birth or within the first years of life have a higher chance of melanoma than those that arise later if they are over one-third of an inch in size.  

An unusual photo of three types of dysplastic nevi (atypical moles). Upper left is a relatively clustered group of cells that are darker in nature. Central lesion is a newly erupting mole and the bottom right lesion is the classic fried egg appearance of a dysplastic mole.
   

 

 

  Dark lentigo maligna of a patients' left forehead. It also contained a spot of deadly lentigo maligna melanoma found in the tiny central black dot that was biopsied.
   Acral lentiginous melanoma of the toe.    Superficial spreading melanoma of the arm. Note irregular black coloration of the left side of this photograph and the notched brown border of the right side of this lesion.

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