摘要
Abstract
Objective To analyze the dermoscopic characteristics of pigmented and classic li-chen planus.Methods A retrospective analysis was conducted on 35 patients with lichen planus(18 cases of pigmented lichen planus and 17 cases of classic lichen planus)admitted to our hospi-tal between June 2022 and December 2023.Their histopathological results and dermoscopic ima-ges were collected to compare the dermoscopic features between these two types.Results Patho-logical examination identified a total of 113 skin lesions in 35 patients with lichen planus,inclu-ding 80 classic lichen planus and 33 pigmented lichen planus.Dermoscopic examination revealed that the reticular and circular structures of Wickham striae,as well as the white and yellow-white coloration,were more prominent in classic lichen planus compared to pigmented lichen planus.Conversely,blue-gray pigmentation structures were more common in pigmented lichen planus.In pigmented mode,punctate/globular structures and follicular keratotic plugs were significantly less frequent in lassic lichen planus than in pigmented lichen planus.Additionally,punctate,linear,and globular vascular structures,along with radial vascular distribution around Wickham striae,were more prevalent in classic lichen planus,whereas diffuse vascular distribution was more com-mon in pigmented lichen planus(all P＜0.05).Under a dermoscopy,pigmented lichen planus showed white streaks of varying widths with a glossy appearance,and scattered pigment dots of u-niform size along with globular or radial vascular structures at the edges.Classic lichen planus,on the other hand,displayed a red background with well-defined borders,white streaks(Wickham striae)of varying widths,and radial red lines(linear vessels)surrounding the Wickham striae.Conclusion The dermoscopic features of pigmented and classic lichen planus are distinct,and dermoscopy can effectively differentiate between the two.关键词
经典扁平苔藓/色素性扁平苔藓/皮肤镜/皮肤镜特征Key words
classic lichen planus/pigmented lichen planus/dermoscopic/dermoscopic features
