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  • Title: Dermatologic perivascular hemophagocytosis: a report of two cases.
    Author: Draper NL, Morgan MB.
    Journal: Am J Dermatopathol; 2007 Oct; 29(5):467-9. PubMed ID: 17890916.
    Abstract:
    Hemophagocytic syndrome includes fever, hepatosplenomegaly, cytopenias, coagulopathy, and abnormal liver function tests, with some patients developing lymphadenopathy and cutaneous eruptions. Herein we report two cases of dermal perivascular hemophagocytosis identified in skin biopsies of two patients with no additional symptoms attributable to hemophagocytic syndrome. Biopsies showed capillary ectasia with dermal perivascular infiltrates. The overlying epidermis and adjacent subcutaneous fat was unremarkable. The infiltrate consisted of perivascular neutrophils and benign histiocytes with predominately phagocytized erythrocytes and occasional engulfed karyorrhectic debris. Perivascular nuclear dust (leukocytoclasia) and extravasated erythrocytes were present, but other factors typically found in leukocytoclastic vasculitis were absent, namely fibrin deposition and endothelial hypertrophy and/or necrosis. This appears to be hemophagocytosis, possibly associated with late lesions of leukocytoclastic vasculitis. Both hemophagocytosis and leukocytoclastic vasculitis are associated with activated immunity with increased cytokines and/or immune complexes. It is important to consider this uncommon finding in the evaluation of indeterminate cutaneous eruptions.
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