Er:YAG激光器
医学
钇铝石榴石
钕
激光器
铒
Nd:YAG激光器
Q开关
核医学
钇
皮肤病科
外科
材料科学
光学
冶金
物理
氧化物
作者
Tao Ma,Inés Allones,Moreno-Arias Ga,Mariano Vélez
标识
DOI:10.1111/j.1365-2133.2004.06259.x
摘要
Becker's naevus (BN) may represent a distressing cosmetic handicap and a challenging issue regarding treatment.To compare clinical and histopathological findings of patients with BN treated with two different lasers: an erbium:yttrium-aluminium-garnet (Er:YAG) system vs. a neodymium:YAG (Nd:YAG) laser.In this prospective and comparative study we present the clinical and histopathological evolution during a 2-year follow-up of 22 patients with BN treated with only one pass of the Er:YAG laser (n = 11) or three treatment sessions with the Q-switched Nd:YAG system (n = 11).Clinical evaluation 2 years after treatment with the Er:YAG laser showed complete clearance (100%) in 54% of the patients (n = 6) and clearance of > 50% in 100% of the subjects. In relation to Nd:YAG laser treatments our results echo those of other authors. Numerous sessions are necessary to get an acceptable clinical clearance rate. Only one patient showed marked clearance (51-99%) after three treatment sessions. Moderate (26-50%) and mild (1-25%) clearance was observed in 45.5% (n = 5) and 27.3% (n = 3) of the patients.Both Er:YAG and Nd:YAG are safe tools to treat BN. However, in terms of pigment removal, one pass with Er:YAG is a superior technique to three treatment sessions with the Nd:YAG.
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