[A case of systemic lupus erythematosus with hemophagocytic syndrome and cytophagic histiocytic panniculitis]

A 23-year-old man, admitted because of high fever, polyarthralgia, butterfly rash and chest pain, was diagnosed as systemic lupus erythematosus (SLE) from the findings of positive antinuclear antibody and anti-DNA antibody. He was treated with 60 mg prednisolone daily, but as reducing the dose, white blood cell counts and platelet counts were decreased and fever, polyarthralgia, decrease of complements, increase of ferritin, hepato-splenomegaly and liver dysfunction were observed. Bone marrow specimen revealed phagocytosis of blood cells by histiocytes and he was diagnosed as hemophagocytic syndrome(HPS) due to active SLE. Methylprednisolone pulse therapy was effective temporarily, HPS recurred while reducing steroid, and cyclosporin was added. After a temporary remission, marked extensive swelling in the face appeared suddenly. Facial skin biopsy showed necrosis of fat cells and hemophagocytosis by histiocytes. Accordingly, he was diagnosed as panniculitis due to HPS and was treated successfully with intravenous cyclophosphamide pulse therapy and high dose of gammaglobulin. Several cases of HPS due to SLE have been reported recently, but this is a rare case of cytophagic histiocytic panniculitis (CHP) due to SLE.