Treatment of Previously Treated Facial Capillary Malformations: Results of Single-Center Retrospective Objective 3-Dimensional Analysis of the Efficacy of Large Spot 532 nm Lasers

Abstract

A large spot 532 nm laser is effective in previously treated patients with facial CM.

Usefulness of three-dimensional digital image analysis for objective evaluation of the efficacy of non-facial port-wine stain treatment with large spot 532 nm laser

“…Our study proved that the large spot 532 nm laser is effective in the treatment of neck and trunk PWS in Caucasian patients ( Figures 1 C–E ). Objectively measured rates of improvement were similar to those found for facial PWS [ 5 , 18 ]. In these earlier studies we found that in previously untreated facial PWS median GCEmax was 70.4%, which is similar to 69.9% found in the current study.…”

“…There are several types of devices available for PWS treatment, including pulse-dye laser (PDL), intense pulse light (IPL), small and large spot 532 nm KTP (potassium-titanyl-phosphate) laser, and 1064 nm neodymium-doped yttrium aluminum garnet (Nd:YAG) laser. Others such as alexandrite 755 nm or diode 800–983 nm lasers are less commonly used and argon, copper and krypton lasers are currently not recommended because of the poor safety-to-efficacy profile [ 5 ]. Recently photodynamic therapy (PDT) has shown promising results for the treatment of PWS in Chinese patients [ 6 ].…”

“…Other devices based on colorimetric methods assess only the color of the lesion, neglecting its area [ 13 – 17 ]. Analyzing combined measurement of an average color of the lesion and area measured with 3D image analysis has proven its value in our previous reports on facial PWS [ 5 , 18 ]. In these reports we used a commercially available tool for taking 3D face and body images.…”

Lasers in dermatology. Recommendations of the Polish Dermatological Society. Part II. Treatment of vascular lesions

“…(kolejność przedstawionych laserów wg rosnącej długości fali generowanej przez urządzenia): 1) lasery KTP (potassium titanyl phosphate) i lasery diodowe emitujące fale o długości 532 nm; 2) lasery pulsacyjno-barwnikowe emitujące światło w zakresie 585-595 nm, 3) lasery aleksandrytowe emitujące fale o długości 755 nm; 4) lasery diodowe emitujące fale w zakresie od 800 do 940 nm; 5) lasery Nd:YAG (neodymowo-jagowe) emitujące fale o długości 1064 nm; ich wiązka może penetrować nawet na głębokość 3-3,5 mm; 6) generatory intensywnych pulsów światła (intense pulsed light -IPL; 500-1200 nm); Other devices are used less frequently or are mostly historical in nature (table 1) [5].…”

“…In time these lesions may become hypertrophic [69,70]. In the treatment of this type of lesions, the most effective are lasers emitting the wavelength of 595 nm, although recent studies show the high effectiveness of 532 nm lasers with a large spot in the population of patients with phototypes from I-III [5,13,[71][72][73]. When treating this type of lesions, one should take into account the necessity to perform about 7-10 treatment sessions with the interval between treatments reduced to 2-4 weeks for PDL treatments and a slightly longer time for 532 nm lasers.…”