532-nm Diode Laser Treatment of Seborrheic Keratoses with Color Enhancement

Author: CULBERTSON, GARY RANDALL1

Source: Dermatologic Surgery, Volume 34, Number 4, April 2008 , pp. 525-528(4)

Publisher: Blackwell Publishing

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Abstract:

BACKGROUND

Seborrheic keratoses (SKs) are benign cutaneous tumors of the epidermis. Localization in the head and neck areas can produce an unsightly appearance. Recurrence after curettage, shave excision, cryoablation, or chemical peel can be common. OBJECTIVE

The objective was to determine if laser ablation with the 532-nm laser and color enhancement is effective in removing SKs. MATERIALS AND METHODS

A total of 326 patients who presented with 1,567 benign SKs were treated with the DioLite (Iridex Corp.) and VersaPulse cosmetic (Coherent Inc.) 532-nm diode lasers with color enhancement using a red marker or ferric subsulfate. The DioLite was set at 27 to 30 J with a 2- to 3-mm spot size, and a 10-ms pulse width was used for ablation. The VersaPulse was set at a lower energy of 9.5 to 12 J/cm2 with a 3-mm spot size, 3- to 6-Hz repetition rate, and 10-ms pulse duration for ablation. All patients were Caucasian. RESULTS

Complete resolution of the SKs occurred in 93% of lesions. Seven percent of SKs required a second round of laser treatment for incomplete ablation. There were no cases of hyperpigmentation or hypertrophic scar formation of the skin following laser treatment. Hypopigmentation occurred in 6% of patients and was associated with old, chronic, or recalcitrant lesions.

The author has indicated no significant interest with commercial supporters.

Document Type: Research article

DOI: 10.1111/j.1524-4725.2007.34098.x

Affiliations: 1: Iris Surgery Center, Sumter, South Carolina

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