Melanocytic nevus https://en.wikipedia.org/wiki/Nevus
Melanocytic nevus genus est tumoris melanocytici, qui cellulas nevi continet. Maior pars nevorum apparet in primis duobus decenniis vitae hominis. Circa centum nevi in infantia nascentur, id est ≈ unum nevo per infantem. Nevi, quae in forma benigni neoplasmi quaesitae sunt, dum nevi congenitae minor malformationis vel hamartomae sunt, possunt in maiori periculo melanomatis esse. Nevi benigni circulares vel ovales sunt, plerumque parvi (inter 1‑3 mm), licet aliqui majores quam magnitudo plumbi typici (5 mm) possint esse. Aliqui nevi pilosi sunt.

Curatio
Laser chirurgia plerumque adhibetur ut parvas nevi cosmeticē removere. Si magnitudo maior quam 4‑5 mm est, requiri potest excisio chirurgica. In infantibus, nevi maiores quam 2 mm in magnitudine saepe sine cicatrice penitus removeri difficiliores sunt.
#CO2 laser
#Er-YAG laser
Informationes plurimae ― Latine
References Effective Treatment of Congenital Melanocytic Nevus and Nevus Sebaceous Using the Pinhole Method with the Erbium-Doped Yttrium Aluminium Garnet Laser 25324667 
NIH
Nevus melanocyticus congenitus est, qui vel in neonatali aetate praesens est vel in gradibus postnatalibus infantiae apparet. Nevus sebaceus describitur ut locus hamartomatus embryologicus, pilosebaceus unitatis deficiens. Hic describimus quomodo technicae taedae cum laser Erbium:YAG ad laesiones nevorum in diversis aegris curandis adhibitae sint.
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
Melanoma genus tumoris est quod melanocytis formatis, cellulis coloris cutis, simile carcinomati fit. Melanocytis a crista neurali originem trahit. Hoc significat melanomata non solum in cute, sed etiam in aliis locis ubi cristae cellulae neurales migrant, sicut tractus gastrointestinalis et cerebrum. Superstitio pro aegris cum melanoma praematuro stadio (0 scaenae) alta est, ad 97 %, dum in stadio (scaena IV) signanter ad circiter 10 % decrescit.
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.