Kageyama N, Tope W D
Department of Dermatology, University of Minnesota, Minneapolis, Minnesota, USA.
Dermatol Surg. 1999 Oct;25(10):819-22. doi: 10.1046/j.1524-4725.1999.99075.x.
Eruptive vellus hair cysts (EVHC) frequently resist a variety of treatment modalities. While pulsed carbon dioxide (CO2) laser has been used effectively for facial EVHC, this laser presents significant risks for hypertrophic scarring when used on truncal sites. Due to absorption of 2940 nm energy by both tissue water and protein, the erbium:yttrium-aluminum-garnet (Er:YAG) laser ablates more cleanly and creates less residual thermal injury in the wound bed. This laser might prove efficacious and safe in treating nonfacial EVHC.
To assess treatment efficacy and wound healing after Er:YAG laser ablation of EVHC.
Two patients with 32 truncal EVHC were treated with pulsed Er:YAG laser using a drilling technique followed by second intention healing.
Laser treatment sites healed without permanent dyspigmentation or hypertrophic scarring. No lesion recurrence was observed.
Er:YAG laser ablation is an effective method for treating EVHC at anatomic sites prone to hypertrophic scar formation.
发疹性毳毛囊肿（EVHC）常常对多种治疗方式产生抵抗。虽然脉冲二氧化碳（CO2）激光已有效地用于面部EVHC，但该激光用于躯干部位时会有形成肥厚性瘢痕的重大风险。由于组织中的水和蛋白质均能吸收2940nm的能量，铒：钇铝石榴石（Er：YAG）激光的消融更为彻底，且在创床上产生的残余热损伤更少。这种激光可能在治疗非面部EVHC方面被证明是有效且安全的。
评估Er：YAG激光消融EVHC后的治疗效果及伤口愈合情况。
对两名患有32个躯干EVHC的患者采用钻孔技术，使用脉冲Er：YAG激光进行治疗，随后让伤口二期愈合。
激光治疗部位愈合后未出现永久性色素沉着异常或肥厚性瘢痕。未观察到病变复发。
Er：YAG激光消融是一种治疗易形成肥厚性瘢痕的解剖部位的EVHC的有效方法。
