NCIt definition : A morphologic finding that usually refers either to intraepithelial dysplastic and
architectural changes that involve the entire thickness of the epithelium without
invasion of the basement membrane (carcinoma in situ) or proliferation of atypical
melanocytes in the dermal-epidermal junction without infiltration of the papillary
or reticular dermis (lentigo maligna).;
Semantic type(s)