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Interface dermatitis in skin lesions of Kikuchi–Fujimotos disease: a histopathological marker of evolution into systemic lupus erythematosus?Department of Dermatology, Hospital Juan Canalejo, La Coruña, Spain
Department of Internal Medicine, Hospital Juan Canalejo, La Coruña, Spain
Department of Dermatology, Hospital Juan Canalejo, La Coruña, Spain
Department of Pathology, Hospital Juan Canalejo, La Coruña, Spain
Department of Pathology, Hospital Juan Canalejo, La Coruña, Spain
Department of Dermatology, Hospital Juan Canalejo, La Coruña, Spain Kikuchis disease (KD) is a self-limiting histiocytic necrotizing lymphadenitis (HNL). Cutaneous manifestations are frequent and usually show histopathological findings similar to those observed in the involved lymph nodes. HNL with superposed histological features to KD has been described in patients with lupus erythematosus (LE), and a group of healthy patients previously reported as having HNL may evolve into LE after several months. Up to date, features to predict which HNL patients will have a self-limiting disease and which could develop LE have been not identified. In order to clarify the characteristics of skin lesions associated with KD, we report a case of HNL with evolution into systemic lupus erythematosus (SLE) and a review of previous reports of KD with cutaneous manifestations. A 17-year-old woman presented with a 4-month history of fever and generalised lymphadenopathy. A diagnosis of HNL was established based on a lymph node biopsy. One month later, she developed an erythematoedematous rash on her upper body, with histopathological findings of interface dermatitis. After 8 months, anti-nuclear antibodies (ANA) at titre of 1/320, anti-DNA-ds antibodies and marked decrease of complement levels were detected. During the following 2 years, she developed diagnostic criteria for SLE, with arthralgias, pleuritis, aseptic meningitis, haemolytic anaemia and lupus nephritis. To our knowledge, 27 cases of nodal and cutaneous KD have been reported, 9 of which later developed LE. In all these patients, the skin biopsy revealed interface dermatitis. Skin biopsy revealed a pattern of interface dermatitis in all reviewed KD cases, which evolved into LE. Even this histopathological finding was not previously considered significant; it might be a marker of evolution into LE.
Key Words: Cutaneous lupus erythematosus histiocytic necrotizing lymphadenitis interface dermatitis Kikuchi–Fujimotos disease
Lupus, Vol. 17, No. 12,
1127-1135 (2008) |
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