Certain epidermal cellular anomalies with discussion, where possible, of their significance or method of their formation.
D004847:Epithelial Cells; D006801:Humans; D007911:Lentigo / Q000175:diagnosis; D008010:Lichen Planus / Q000175:diagnosis; D012871:Skin Diseases / Q000473:pathology*; D012878:Skin Neoplasms / Q000473:pathology*