Treatment of recalcitrant-pigmented flat warts using frequency-doubled Q-switched Nd–YAG laser

✍ Scribed by Yung-tsai Li; Kao-chia Yang

• Publisher: John Wiley and Sons
• Year: 2001
• Tongue: English
• Weight: 163 KB
• Volume: 29
• Category: Article
• ISSN: 0196-8092
• DOI: 10.1002/lsm.1114

✦ Synopsis

Abstract

Background and Objective

Recalcitrant‐pigmented flat warts may persist for years despite treatment. Many methods have been used to manage pigmented flat warts, but their efficiencies are varied. Since pigmented flat warts are very similar to lentigo clinically, we used frequency‐doubled Q‐switched (FDQS) Nd–YAG laser at the wavelength of 532 nm to treat recalcitrant‐pigmented flat warts and evaluated the effect.

Study Design/Materials and Methods

Seven patients with recalcitrant‐pigmented flat warts were enrolled in this study. We set the FDQS Nd–YAG laser to deliver 2.5 J/cm^2^ fluence at the wavelength of 532 nm to treat these lesions. After 6 months, we evaluated the recurrence of pigmented flat warts, pigmentary, and textural changes on the treated areas.

Results

There were absences of recurrent lesions, pigmentary, and textural changes on the treated areas of these seven patients after 6 months.

Conclusions

Through both selective photothermolysis effect and propagation of photoacoustic waves, FDQS Nd–YAG laser at the wavelength of 532 nm can be used as an effective alternative to treat recalcitrant pigmented flat warts. Lasers Surg. Med. 29:244–247, 2001. © 2001 Wiley‐Liss, Inc.