Nevus, Epithelioid and Spindle CellMelanoma, AmelanoticNevus, BlueNevus, PigmentedMelanomaDog DiseasesSkin NeoplasmsNevusMelanocytesMouth NeoplasmsDogsDysplastic Nevus SyndromeMelanosisImmunohistochemistryDermoscopyHutchinson's Melanotic FreckleMART-1 AntigenNeurocutaneous SyndromesConjunctival NeoplasmsLentigoMelanoma-Specific AntigensNevus, IntradermalPancreatic NeoplasmsFacial NeoplasmsProto-Oncogene Proteins B-rafSunlightSkin PigmentationNeoplasmsKeratosis, SeborrheicDermatologyTumor Markers, BiologicalNeoplasm ProteinsS100 ProteinsSarcoma, Clear CellNeoplasms, Cystic, Mucinous, and SerousAntigens, NeoplasmUveal NeoplasmsPigmentation DisordersNeoplasms, Multiple PrimaryMelaninsChoroid NeoplasmsMicrophthalmia-Associated Transcription FactorVitiligoEpithelioid CellsMonophenol MonooxygenaseDNA, NeoplasmCysteinyldopaIris Neoplasmsgp100 Melanoma AntigenEye NeoplasmsSkinPerivascular Epithelioid Cell NeoplasmsNeoplasms, Radiation-InducedSkin DiseasesMeningeal NeoplasmsReceptor, Melanocortin, Type 1Kidney NeoplasmsMelanosomesNeoplasms, Second PrimaryNeoplasm Regression, SpontaneousNevus, HaloNeoplasm StagingSoft Tissue NeoplasmsAdenocarcinoma, MucinousThyroid NeoplasmsNeoplasm MetastasisMicrodissectionNeoplasm InvasivenessMyeloproliferative DisordersBiopsyGene Expression Regulation, NeoplasticSunburnPrecancerous ConditionsDermisFactor XIIIaImmunoenzyme TechniquesLung NeoplasmsParotid NeoplasmsDisease ProgressionCystadenomaNeoplasms, Connective and Soft TissueNeoplasms, Plasma CellHistiocytoma, Benign FibrousRetrospective StudiesAppendiceal NeoplasmsLiver NeoplasmsMitotic IndexCystadenoma, MucinousOvarian NeoplasmsNeurofibromaHistocytological Preparation TechniquesEndocrine Gland NeoplasmsHyperpigmentationHamartomaNevus, Spindle CellGastrointestinal NeoplasmsEye ColorCarcinoma, Pancreatic DuctalNeoplasms, ExperimentalGTP-Binding Protein alpha Subunits