Treatment of steatocystoma with a combined 585 nm pulsed dye laser/1 064 nm neodymium：yttrium-aluminum-garnet laser

Abstract:

Objective：To present the results of a prospective study using a combined 585 nm pulsed dye laser（PDL）/1 064 nm neodymi－um：yttrium-aluminum-garnet（Nd：YAG） laser to treat steatocystoma. Methods：One hundred and two patients were enrolled in this study with 45 non-inflammatory lesions and 57 inflammatory lesions. The parameters were set as follows：energy densities of 5.0-8.0 J/cm2 with PDL and 10-30 J/cm2 with 1 064 nm Nd：YAG laser；pulse duration of 0.5 ms with 585 nm PDL and 15 ms with 1 064 nm Nd：YAG laser. Delaying time between 2 beams was medium and spot size was 7 mm. Results：The curative rates for inflammatory steatocystoma were 89.5%，96.5% and 98.2% in 2 weeks，4 weeks and 24 weeks respectively while those for non-inflammatory steato－cystoma were 88.9%，95.6% and 95.6% in 2 weeks，4 weeks and 24 weeks respectively，without differences between the two（P=1.000） Two non-inflammatory lesions relapsed with a recurrence rate of 1.96% during 6-18 months’ telephone follow-up. Transient purpura was present in all patients and was faded away within 1-3 weeks. The incrustation was observed in 43.1% patients. The severity of pain was assessed by visual analogue score（VAS） and the average score was 2.41±0.97. However，other adverse effects were limited. Conclusions：Combined 585 nm PDL/1064 nm Nd：YAG laser is a valuable treatment option for steatocystoma. It can eliminate both inflammatory and non-inflammatory steatocystoma with good healing and minimal adverse effects.