Kikuchi-Fujimoto disease presenting with papular lesions on the elbows and knees

Abstract

Kikuchi-Fujimoto disease is a self-limited febrile lymphadenitis of unknown etiology, possibly associated with cutaneous lesions. We report a case of Kikuchi-Fujimoto disease presenting with papular lesions limited to the elbows and knees. The skin biopsy specimen showed spongiosis and pseudo-Pautrier abscesses in addition to the typical histopathological findings of Kikuchi-Fujimoto disease. Although necrosis was not observed in the lymph node biopsy specimen, histopathological and immunohistochemical findings were consistent with Kikuchi-Fujimoto disease in the proliferating phase.