Carcinoma, Basal CellCarcinoma, Squamous CellSkin NeoplasmsBasal Cell Nevus SyndromeCarcinomaHead and Neck NeoplasmsCarcinoma, Renal CellEyelid NeoplasmsCarcinoma, HepatocellularMohs SurgeryFacial NeoplasmsImmunohistochemistryNeckTumor Markers, BiologicalHeadNeoplasms, Basal CellCarcinoma in SituCarcinoma, Transitional CellKidney NeoplasmsKeratosisCell Line, TumorCarcinoma, PapillaryMouth NeoplasmsDermoscopyCarcinoma, Merkel CellSkinBowen's DiseaseKeratosis, ActinicLiver NeoplasmsKeratoacanthomaCarcinoma, Small CellSunlightGene Expression Regulation, NeoplasticAdenocarcinomaKeratosis, SeborrheicEsophageal NeoplasmsNeoplasm StagingPrognosisNeoplasms, Multiple PrimaryNeoplasm InvasivenessKeratinsCarcinoma, Ductal, BreastCarcinoma, BasosquamousHedgehog ProteinsKeratin-14Neoplasm Recurrence, LocalTumor Suppressor Protein p53KeratinocytesRetrospective StudiesNeoplasm ProteinsLung NeoplasmsRNA, MessengerPhotochemotherapyTreatment OutcomeGenes, Tumor SuppressorKeratin-15Neoplasm MetastasisJaw CystsImmunoenzyme TechniquesAminolevulinic AcidDNA, NeoplasmChromosomes, Human, Pair 9Antineoplastic AgentsNeoplasms, Radiation-InducedBiopsyLymphatic MetastasisPrecancerous ConditionsUrinary Bladder NeoplasmsTumor BurdenSkin PigmentationCarcinoma, Adenoid CysticCell ProliferationReceptors, Cell SurfaceCarcinoma, Signet Ring CellLaryngeal NeoplasmsMedulloblastomaPhotosensitizing AgentsReverse Transcriptase Polymerase Chain ReactionNeck PainTumor Cells, CulturedCarcinoma, BronchogenicEpidermisCarcinoma, Giant CellBreast NeoplasmsMutationUltraviolet RaysNose NeoplasmsMice, NudeBetapapillomavirusAntigens, NeoplasmKi-67 AntigenTime FactorsCarcinoma, Intraductal, NoninfiltratingCarcinoma, NeuroendocrineCell DivisionOrbit EviscerationFollow-Up StudiesLoss of HeterozygositySignal TransductionCell Transformation, Neoplastic