結節性紅斑様皮疹と全身のリベドを呈し，皮膚血管炎の関与が考えられた川崎病

・川崎病の経過中に結節性紅斑様皮疹と全身のlivedo racemosaを伴った症例を経験した．・皮膚生検では皮下脂肪織隔壁内の動静脈炎，および動脈周囲を中心とした炎症細胞浸潤を認めた．・川崎病に伴う皮膚血管炎によりこれらの皮疹が生じたと考えた．（「症例のポイント」より）

Kawasaki disease accompanied by erythema nodosum-like skin lesion and livedo racemosa due to cutaneous vasculitis

Ototake, Yasushi1）Yamaguchi, Yukie1）Nozawa, Tomo2）Hibiya, Takashi3）Takahashi, Kazuo4）Aihara, Michiko1） 1）Department of Environmental Immuno-Dermatology, Yokohama City University Graduate School of Medicine 2）Department of Pediatrics, Yokohama City University Graduate School of Medicine 3）Department of Pathology, Yokohama City University Hospital 4）Department of Dermatology, International University of Health and Welfare Atami Hospital

Abstract A 2-year-old boy, who was diagnosed as Kawasaki disease and under treatment for 3 weeks, presented to our department. Physical examination revealed erythema nodosum like skin lesions on his leg and livedo racemosa on his limbs and trunk. Skin biopsy from his leg demonstrated the subcutaneous arteritis and phlebitis. Septal panniculitis was also found, that was thought to be induced by inflammation from vasculitis. We diagnosed him as Kawasaki disease accompanied by cutaneous vasculitis. He was treated by corticosteroid pulse therapy, and his symptoms were improved. Cutaneous vasculitis is a very rare symptom in Kawasaki disease.