Abstract:

Objective To evaluate the efficacy of long-pulsed tunable Nd: YAG laser on capillary hemangioma and to analyse its influencial factors. Methods A retrospective review was conducted on 124 patients with 135 vascular lesions treated with long-pulsed tunable Nd:YAG laser from February, 2007 to January, 2008. Working parameters, including spot size （3 - 5 mm）, pulse duration （10 - 30 ms） and fluence （120 - 200 J/cm2） were determined based on the size, color and depth of lesions and adjusted according to the immediate reaction of lesions. The interval of two treatments was 1 month. Results Of the 135 lesions, 100 experienced a more than 95% subsidence, 22 achieved 60% - 94% subsidence, 11 got 30% - 59% subsidence, and 2 reached less than 30% subsidence. The cure rate and effective rate were 74.07% and 90.37% respectively. Smaller lesions showed a better response to the treatment than larger ones （P < 0.0001）, whereas the sites and depth of lesions had no effect on the efficacy （both P > 0.05）. Atrophy scar occurred in 4 （2.96%） lesions, and blisters in 12 （8.89%） lesions after the treatment. No purpura or pigmentary changes occurred. Conclusion The long-pulsed tunable Nd:YAG laser is an effective treatment for capillary hemangioma with fast action and few side reactions.

Key words: Nd:YAG laser;Hemangioma;Therapeutic efficacy