Malignant melanoma in situ, precancerous melanosis, or atypical intraepidermal melanocytic proliferation.
D002455:Cell Division; D003581:Cytodiagnosis; D006801:Humans; D008544:Melanocytes / Q000473:pathology*; D008545:Melanoma / Q000473:pathology*; D008548:Melanosis / Q000473:pathology*; D011230:Precancerous Conditions / Q000473:pathology*; D012878:Skin Neoplasms / Q000473:pathology*