Lasers in Medical Science

, Volume 33, Issue 3, pp 597–601 | Cite as

Picosecond 532-nm neodymium-doped yttrium aluminum garnet laser—a promising modality for the management of verrucous epidermal nevi

  • Assi Levi
  • Dan Ben Amitai
  • Daniel Mimouni
  • Yael A. Leshem
  • Ofir Arzi
  • Moshe Lapidoth
Original Article


The verrucous epidermal nevus (VEN) is the most common type of epidermal nevi. As lesions can be disfiguring, treatment is often sought. Many therapeutic approaches have been reported, with variable efficacy and safety. Picosecond (PS) lasers are novel laser devices designated to target small chromophores. A side effect of these lasers is blistering due to epidermal-dermal separation. We aimed to harness this side effect of the PS lasers to treat patients with VEN. The purpose of this study was to report our experience treating VEN using a PS 532-nm laser. We present a retrospective case series of six patients with large VEN who were treated using a PS 532-nm laser (2–6 treatments, 8–10 weeks apart). Response in clinical photographs was assessed by two independent dermatologists and graded on a scale of 0 (exacerbation) to 4 (76–100% improvement). Patient satisfaction was recorded on a scale of 1–5. All patients demonstrated significant improvement. Average improvement was 3.7 on the quartile scale of improvement. Patient satisfaction rate averaged 4.7. The PS 532-nm laser is a promising novel modality for the treatment of large VEN.


Epidermal nevus Verrucous epidermal nevus Laser treatment Picosecond 532-nm laser Dermal-epidermal separation Esthetic improvement 


Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.


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Copyright information

© Springer-Verlag London Ltd., part of Springer Nature 2018

Authors and Affiliations

  1. 1.Photodermatoses Clinic, Laser Unit, Dermatology DepartmentRabin Medical CenterPetach TikvaIsrael
  2. 2.Sackler School of MedicineTel Aviv UniversityTel AvivIsrael
  3. 3.Depertment of DermatologyTel Aviv Medical CenterTel AvivIsrael

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