色素性病変に対するQスイッチルビーレーザー治療の効果と限界

抄録

We have used the Q-switched ruby laser in the treatment of pigmented skin lesions since 1991 to treat approximately 2,000 patients out of which more than 1,000 were treated for nevus of Ota. This laser was effective in treating almost all cases of nevus of Ota, ectopic mongolian spot, blue nevus, ephelides and aquired bilateral nevus of Ota-like macules, However, a large degree of variation was observed among individuals when treating pigmented nevus, and the laser was ineffective in some cases despite repeated irradiation of the affected area. Great care should be taken with patients with nevus spilus because reccurence was observed in many cases and sometimes the area actually became darker. It was found that the laser was effective in removing black tattoos, but the treated site was aggravated in many cases where the tattoo was red or yellow.