播散性浅表汗孔角化病并发寻常性银屑病

Two cases of disseminated superficial porokeratosis complicated by psoriasis vulgaris

报告2例播散性浅表汗孔角化病并发寻常性银屑病。例1.男,53岁。头部、下肢红斑鳞屑3年,环形斑块1年。皮肤科检查:头皮鳞屑性红斑,面部、臀部散在边缘堤状隆起而中央轻度萎缩的褐色环状斑块。例2.男,37岁。全身红斑、鳞屑8年,环形斑块2年。皮肤科检查:头皮鳞屑性红斑,躯干、四肢鳞屑性红斑与边缘堤状隆起而中央轻度萎缩的褐色环状斑块混杂分布,两例患者红斑鳞屑性皮损经组织病理检查均符合寻常性银屑病,褐色环状斑块改变均见下方颗粒层消失的柱状角化不全,符合播散性浅表汗孔角化病。诊断:播散性浅表汗孔角化病并发寻常性银屑病。文中对银屑病并发汗孔角化病的可能原因进行了讨论。

Two cases of disseminated superficial porokeratosis complicated by psoriasis vulgaris are reported. Case 1： a 53-year-old man consulted about red scaly plaques for 3 years and with annular papules for 1 year. Scaly plaques were found mostly on the scalp and legs, but annular papules on the face and buttocks. Case 2： A 37-year-old man presented with red scaly plaques for 8 years and with annular papules for the last 2 years. Physical examination revealed the scaly plaques mixed with annular papules on the trunk and extremities. The annular papules in both cases were multiple, brownish, asymptomatie, and their border was hyperkeratotic but central area atrophic, and histology showed a parakeratotic column on the edge of the skin lesion. The scaly plaques in both cases were typical to diagnosis as psoriasis vulgaris not only clinical but histological manifestations. So a diagnosis of disseminated superficial porokeratosis complicated by psoriasis vulgaris was made.