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Regression Structures

White areas and blue areas are considered together, reflecting the two main morphologic aspects of regression, namely, fibrosis and melanosis

 

  Definition: White areas (white scarlike areas) and blue areas (gray-blue areas, peppering, multiple blue-gray dots) are commonly associated, resulting in so-called blue-whitish areas that are virtually indistinguishable from blue-whitish veil

 

  White areas and subtle
blue areas in a melanoma

 

  Melanoma with intermingled white areas (fibrosis) and blue areas (melanosis). Note that the blue-whitish areas are virtually indistinguishable from blue-whitish veil.