Nevus, PigmentedNevus, Epithelioid and Spindle CellNevusMelanomaSkin NeoplasmsMelanoma, AmelanoticNevus, BlueMelanocytesDysplastic Nevus SyndromeDog DiseasesMouth NeoplasmsDogsMelanosisImmunohistochemistryDermoscopyHutchinson'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 Neoplasms