Klaus  Fritz,Carmen  Salavastru,
Longitudinal Melanonychia Treatment with Picosecond Laser for Differential Diagnosis
Surgical Case Reports
2020
2613-5965
http://dx.doi.org/10.31487/j.SCR.2020.09.09
https://www.sciencerepository.org/longitudinal-melanonychia-treatment-with-picosecond-laser-for-differential-diagnosis_SCR-2020-9-109 
Abstract: Longitudinal melanonychia can have multiple causes, among them subungual melanoma. Clearing the pigmentation with pigment specific lasers, especially picosecond laser with less pain can be a comfortable and reliable alternative to ablation in the differential diagnosis.Keywords: Melanonychia, nail, melanoma, pico laser