Department of Dermatology, Institute of Medical Sciences, Medical College of Rzeszów University, Rzeszów, Poland.
Department of Telemedicine and Bioinformatics, Jagiellonian University Medical College, Krakow, Poland.
J Eur Acad Dermatol Venereol. 2022 Jul;36(7):1080-1087. doi: 10.1111/jdv.18052. Epub 2022 Mar 19.
Several inflammatory dermatoses, including dermatomyositis (DM), may present as erythematous papules or plaques on the dorsal aspects of the hands over the joints. Limited skin involvement in these entities may pose a diagnostic challenge. (Video)dermoscopy is being utilized more frequently to aid in the differential diagnosis of inflammatory skin conditions.
To describe the dermoscopic findings in Gottron's papules and compare them with dermoscopic features of other dermatoses involving the dorsal aspects of the hands.
Videodermoscopic images from patients presenting with erythematous papules or plaques on the dorsal surface of the hands were retrospectively analysed for the presence of standardized dermoscopic parameters.
Dermoscopic images from patients with DM (n = 12), psoriasis (n = 19), chronic dermatitis (n = 16), mycosis fungoides (n = 7), lichen planus (n = 5) and pityriasis rubra pilaris (n = 3) were included. Gottron's papules were characterized by pleomorphic vessels (dotted vessels accompanied by thick or thin linear vessels with branches or linear curved vessels) in 66.7% of cases, arranged in an unspecified pattern (91.7%), and accompanied by white or pink structureless areas (75.0%). Psoriatic plaques were characterized by dotted vessels arranged in a uniform pattern (94.7%). Vessels arranged in a ring pattern were nearly exclusively observed in psoriasis, while yellow structureless areas and erosions were more frequently present in chronic dermatitis. White lines, corresponding to Wickham striae, were specific for lichen planus.
Videodermoscopy might be of value in differentiating Gottron's papules from other dermatoses involving dorsa of the hands.
包括皮肌炎（DM）在内的几种炎症性皮肤病可能在手关节背侧出现红斑性丘疹或斑块。这些疾病的皮肤局限性受累可能会带来诊断挑战。（视频）皮肤镜检查越来越多地用于辅助炎症性皮肤病的鉴别诊断。
描述 Gottron 丘疹的皮肤镜表现，并将其与累及手背的其他皮肤病的皮肤镜特征进行比较。
回顾性分析手部背侧出现红斑性丘疹或斑块的患者的视频皮肤镜图像，以评估标准化皮肤镜参数的存在情况。
纳入了 12 例 DM 患者、19 例银屑病患者、16 例慢性皮炎患者、7 例蕈样肉芽肿患者、5 例扁平苔藓患者和 3 例毛发红糠疹患者的皮肤镜图像。Gottron 丘疹的皮肤镜特征为多形性血管（点状血管伴粗细不等的线性血管，有分支或线性弯曲血管），占 66.7%，呈不定形排列（91.7%），并伴有白色或粉红色无结构区域（75.0%）。银屑病斑块的特征为点状血管呈规则排列（94.7%）。环状排列的血管几乎仅见于银屑病，而黄色无结构区域和糜烂更常见于慢性皮炎。白色线条，对应 Wickham 纹，是扁平苔藓的特异性表现。
视频皮肤镜检查可能有助于区分 Gottron 丘疹和累及手背的其他皮肤病。
