Cytophagic histiocytic panniculitis: a report of four cases.

Four patients presented with a clinical picture of spiking fever, erythematous nodular subcutaneous skin lesions, anaemia and leucopenia. Inconstant features were weight loss (3/4), splenomegaly (3/4), thrombocytopenia (3/4), raised liver enzymes (3/4), hepatomegaly (2/4) and serosal effusions (2/4). The histopathological findings of lobular histiocytic panniculitis with 'bean-bag' cells were characteristic of cytophagic histiocytic panniculitis (CHP). No infectious agent could be detected, and there was no histological evidence of malignant neoplasia. Unlike most previously described patients with CHP, three of our four patients responded to treatment with immunosuppressive or cytostatic drugs.