Lymphocytic UV Autofluorescence: A Novel Ultraviolet-Induced Fluorescence Dermoscopy Finding in Lichen Nitidus – A Series of Two Cases.

Dynamic blinking/winking of the brown dots–corresponding histopathologically to the ball-like lymphocytic infiltrates–into blue-white fluorescence (yellow arrows) when switching from cross-polarised mode (DermLite DL5, coupled with iPhone 12 camera) to UVFD (DermLite DL5 Wood-Mode 365 nm, coupled with iPhone 12 camera), illustrating the Lymphocytic UV Autofluorescence of Lichen Nitidus.

当搭载iPhone 12摄像头的DermLite DL5皮肤镜从交叉偏振模式切换至UVFD模式（DermLite DL5伍德模式365 nm，同样搭配iPhone 12摄像头）时，棕色斑点会呈现动态闪烁现象；该现象的组织病理学对应表现为球状淋巴细胞浸润，此时斑点呈现蓝白色荧光（黄色箭头标注），此即为光泽苔藓的淋巴细胞紫外自发荧光特征。