Carcinoma, Basal CellCarcinoma, Squamous CellSkin NeoplasmsBasal Cell Nevus SyndromeCarcinoma, Renal CellCarcinomaEyelid NeoplasmsMohs SurgeryFacial NeoplasmsKidney NeoplasmsKeratosisCarcinoma, HepatocellularKeratosis, ActinicHead and Neck NeoplasmsCarcinoma, Transitional CellImmunohistochemistryDermoscopyNeoplasms, Basal CellBowen's DiseaseCarcinoma, Merkel CellKeratoacanthomaSunlightMouth NeoplasmsSkinKeratosis, SeborrheicTumor Markers, BiologicalCarcinoma in SituCarcinoma, Small CellHedgehog ProteinsEsophageal NeoplasmsCarcinoma, BasosquamousAminolevulinic AcidCarcinoma, PapillaryGene Expression Regulation, NeoplasticJaw CystsKeratinocytesNeoplasms, Multiple PrimarySkin PigmentationPhotochemotherapyNeoplasm InvasivenessKeratin-15Keratin-14Chromosomes, Human, Pair 9PrognosisPhotosensitizing AgentsNeoplasms, Radiation-InducedReceptors, Cell SurfaceCarcinoma, Giant CellMedulloblastomaBetapapillomavirusOrbit EviscerationCell Line, TumorCarcinoma, Signet Ring CellUltraviolet RaysNeoplasm StagingKeratinsAminoquinolinesNeoplasm Recurrence, LocalAdenocarcinomaCarcinoma, Acinar CellLung NeoplasmsLiver NeoplasmsBiopsyNose NeoplasmsRetrospective StudiesEpidermisPrecancerous ConditionsSolar SystemHair FollicleLaryngeal NeoplasmsAntineoplastic AgentsMelanomaUrinary Bladder NeoplasmsCarcinoma, Skin AppendageImmunoenzyme TechniquesTongue NeoplasmsCerebellar NeoplasmsNeoplasm ProteinsTreatment OutcomeCarcinoma, Ductal, BreastTumor Cells, CulturedRNA, MessengerMaxillary NeoplasmsNeoplasms, Adnexal and Skin AppendageDNA, NeoplasmScalpAdenocarcinoma, Clear CellOdontogenic CystsTumor Suppressor Protein p53Loss of HeterozygosityVulvar NeoplasmsCase-Control StudiesKi-67 AntigenFicusinLymphatic MetastasisAdenocarcinoma, SebaceousHair DiseasesForeheadCarcinoma, Large CellReverse Transcriptase Polymerase Chain Reaction