Abstract: Objective To evaluate the efficacy and safety of long-pulse Nd:YAG laser therapy for superficial venous malformations.Methods Eighteen patients with superficial venousmal formations were included in this study prospectively.They were treated by long-pulse Nd:YAG laser at an interval of 2 months.The end point of treatment is when the lesion clearance rate is over 90%evaluated by photographs taken before and after therapy.The complications were recorded including blister,pigmentation,telangiectasia and hypertrophic scar.After 12 months of follow-up,the recurrence rate was defined as more than 10%lesion reappeared at their original locations.Results After 1-4 sessions(average 2.4 sessions)treatment,at least 90%could been removed for each lesion.Blister was seen in 4 sessions of 3 cases,pigmentation in 9 sessions of 5 cases,telangiectasia in 3 cases and no scarring.No recurrence was observed.Conclusion Long-pulse Nd:YAG laser is effective and safe for treating superficial venous malformations.

Key words: Long-pulse, Nd:YAG laser, Superficial venous malfo