Melanocytic nevushttps://en.wikipedia.org/wiki/Nevus
Melanocytic nevus o se ituaiga o tuma melanocytic e iai sela nevi. E tele nevi e aliali mai i le luasefulu tausaga muamua o le olaga o le tagata. E tusa ma le tasi i le 100 tagata e fananau i le nevi. O nevi maua o se ituaiga o neoplasm mama, aʻo nevi fanau e manatu o se faʻaletonu laʻititi poʻo le hamartoma, ma atonu e maualuga le lamatiaga mo le melanoma. O nevi gaʻo e lapotopoto pe lapotopoto ma e masani lava ona laʻititi (masani i le va o le 1‑3 mm), e ui o nisi e mafai ona lapopoʻa nai lo le lapisi masani o penitala (5 mm). O nisi nevi e iai lauulu.

○ Togafiti
O le togafiti laser e masani ona faia e aveese nevi laiti. Afai o le lapoʻa e sili atu i le 4‑5 mm, e ono manaʻo se tipi tipitipi. I tamaiti laiti, o nevi e sili atu i le 2 mm e masani ona faigata ona aveese atoa e aunoa ma se maʻila.
#CO2 laser
#Er-YAG laser
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  • Nevus masani
  • Becker nevus – Tau‘au; e faʻaalia i le tuputupu aʻe o lauulu i luga o le nevus.
  • Nevus of Ota ― E foliga lanumoana ona o le loloto o le nofoaga o sela nevus i le dermal layer. I lenei maʻi, o le nevus o loʻo i luga o le conjunctiva. Nevus of Ota e mafai ona aveese e ala i togafitiga laser.
  • Compound nevus – Tonu. O le fa'ailoga fanau laiti e mafai ona tupu i nevi tetele pe a matutua.
  • Intradermal nevus ― O le foliga o se nodule fa'aoso.
  • Nevus masani. O ata e lua o loʻo i lalo o le intradermal nevus, ae o ata e tolu o loʻo i luga o le junctional nevus.
  • Blue nevus ― Ona o le loloto o le nofoaga o le nevus, e foliga mai e lanumoana.
  • Intradermal nevus ― E masani ona maua i luga o le ulu.
  • O lenei ata o loʻo faʻaalia le nevus lesion. Ae peitaʻi, afai e laʻititi le liona autu e pei o lenei, atonu e le mafai e le algorithm ona vaʻai saʻo i le tulaga.
References Effective Treatment of Congenital Melanocytic Nevus and Nevus Sebaceous Using the Pinhole Method with the Erbium-Doped Yttrium Aluminium Garnet Laser 25324667 
NIH
Congenital melanocytic nevus o se nevus melanocytic o lo'o i ai i le taimi na fanau mai ai, pe fa'aalia i vaega mulimuli o le pepe. Nevus sebaceous ua faamatalaina o le nofoaga hamartomatous o se vaega pilosebaceous faaletonu embryologically. I lenei tulaga, matou te fa'amatala pe faʻafefea ona fa'aogaina le pinhole technique i se Erbium:YAG laser e togafitia ai nevi lesions i gasegase eseese.
Congenital melanocytic nevus (CMN) is a melanocytic nevus that is either present at birth or appears during the latter stages of infancy. Nevus sebaceous has been described as the hamartomatous locus of an embryologically defective pilosebaceous unit. Here, we describe how we used the pinhole technique with an erbium-doped yttrium aluminium garnet (erbium : YAG) laser to treat nevi lesions in different patients.
 Malignant Melanoma 29262210 
NIH
O le melanoma o se ituaiga tuma e tupu pe a avea melanocytes, o sela e nafa ma le lanu o le paʻu, ma kanesa. O melanocytes e afua mai le neural crest. O lona uiga e le gata e mafai ona tupu le melanoma i luga o le paʻu, ae faapea foʻi i isi vaega o le tino e iai sela o le neural crest, e pei o le gastrointestinal tract ma le faiʻai. O le fua faatatau o le ola mo tagata maʻi i le amataga o le melanoma (laasaga 0) e maualuga i le 97%, ae e pa'ū tele i le tusa ma le 10% mo i latou e maua i le tulaga maualuga (tulaga IV).
A melanoma is a tumor produced by the malignant transformation of melanocytes. Melanocytes are derived from the neural crest; consequently, melanomas, although they usually occur on the skin, can arise in other locations where neural crest cells migrate, such as the gastrointestinal tract and brain. The five-year relative survival rate for patients with stage 0 melanoma is 97%, compared with about 10% for those with stage IV disease.