1Annular lichen planus on the genitalsCHEN Xiao-hong, KUANG Cui-e, HAN Jian-deColor Atlas291-2922Expression of Th17 Cells and Related Cytokines in Peripheral Blood of Patients with Psoriasis VulgarisZHENG Dao-cheng, CHANG Shu-xia, HUANG Li-ning, CHEN Wen-jing, QIU Miao-fang, XUE Yao-hua, SUN Xi-feng, LI Ming, CHEN Yong-fengOriginal Articles295-2993Lichen Sclerosus et Atrophicus: A Clinical and Pathological Analysis of 24 CasesWANG Xiao-hua, CHEN Wen-jing, CHEN Yong-fengOriginal Articles300-3024Olmsted Syndrome: A Case Report and Review of LiteraturesCHANG Shu-xia, WANG Xiao-hua, GU You-shouOriginal Articles303-3055Langerhans Cell Histiocytosis: A Case Report and Review of LiteraturesXU Wen-ying, GUO QingOriginal Articles306-3096Nasal Type Extranodal NK/T Cell Lymphoma With Skin Lesions as Initial Symptom: A Case Report and Review of LiteraturesCHEN Xue, GAO Guang-chengOriginal Articles310-315