Author/Authors :
V. Ponomarev, Igor P.N. Lebedev Physical Institute of the Russian Academy of Sciences - Leninskiy Prospect, Moscow, Russian Federation , B. Topchiy, Sergey P.N. Lebedev Physical Institute of the Russian Academy of Sciences - Leninskiy Prospect, Moscow, Russian Federation , E. Pushkareva, Alexandra Saint Petersburg National Research University of Information Technologies - Mechanics and Optics, Kronverkskiy Prospect, St. Petersburg, Russian Federation , V. Klyuchareva, Svetlana Department of Dermatovenereology - Mechnikov North-Western State Medical University, Piskarevkiy Prospect, St. Petersburg, Russian Federation , N. Andrusenko, Yury Clinic of Aesthetic Medicine - Head of the Laser Department of the Health Institute, Kharkiv, Ukraine
Abstract :
Introduction: Congenital melanocytic nevus (CMN) is a severe challenge for dermatology. This
pigmented skin lesion is undesirable for patients because of its localization in open areas of the
body. Various visible and near-infrared laser systems and intense pulsed light (IPL) sources have
been applied for CMN treatment. However, post-traumatic hyperpigmentation, structural changes,
atrophy, and scarring due to non-specific thermal damage have been observed. Many patients have
shown recurrence after treatment. Therefore, it highlights the need for testing new laser modalities
for the management of CMN.
Methods: Two adult II Fitzpatrick phototype patients (a 55-year-old male and a 30-year-old female)
with middle-sized facial CMN (on the forehead and lower eyelid) are presented. All patients were
treated with dual-wavelength copper vapor laser (CVL) radiation at 511 nm and 578 nm wavelengths
with a power ratio of 3:2. The average power was 0.7-0.85 W with an exposure time of 0.3 seconds.
The spot size amounted to 1 mm.
Results: Both patients showed complete resolution of CMN after CVL treatments. CMN became
crusted within a few days after the laser treatment and peeled off within seven days. No recurrences
were observed during the follow-up period up to 24 months.
Conclusion: The middle-sized CMN can be successfully treated with dual-wavelength CVL radiation.
Keywords :
Copper vapor laser , Melanocytic nevi , Selective pigmented treatment , Computer simulation , Blood vessel , Hyperpigmentation
