Diagnosis

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Tests or procedures that examine the skin are used to find and diagnose nonmelanoma skin cancer and actinic keratosis. The following procedures may be used:

  • Skin examination: A doctor or nurse checks the skin for bumps or spots that look abnormal in color, size, shape, or texture.
  • Biopsy: All or part of the abnormal-looking growth is cut from the skin and viewed under a microscope by a pathologist to see if cancer cells are present. There are 3 main types of skin biopsies:
    • Shave biopsy: A sterile razor blade is used to “shave-off” the abnormal-looking growth.
    • Punch biopsy: A special instrument called a punch or a trephine is used to remove a circle of tissue from the abnormal-looking growth.
    • Excisional biopsy: A scalpel is used to remove the entire growth.
 
 
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