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Cutaneous Perivascular Hemophagocytosis: A Report of 2 Cases With Emphasis on Clinical and Histological Features.
American Journal of Dermatopathology 2024 May 8
Cutaneous perivascular hemophagocytosis (CH) is a histological manifestation that manifests as systemic hemophagocytic syndrome, also known as hemophagocytic lymphohistiocytosis, when accompanied by fever, hepatosplenomegaly, liver dysfunction, and cytopenia, and may rarely manifest independently of hemophagocytic lymphohistiocytosis. CH typically presents as purpuric or brownish macules and patches on the extremities, abdomen, and trunks. Histopathologically, the hallmark of CH includes extravasated erythrocytes and karyorrhectic debris phagocytized by histiocytes, associated with dermal capillary ectasia, perivascular infiltration of neutrophils, nuclear dust, and histiocytes without atypia. In this study, we report 2 cases of CH encountered in routine diagnostic practice and elucidate their significant clinical and histologic features. Our first patient had leukocytoclastic vasculitis with CH in the setting of Yersinia enterocolitis, and the second case represents CH in association with non-Hodgkin lymphoma. This study highlights the importance of considering CH as a potential indicator of underlying systemic pathology, including infectious and hematological disorders, in clinical practice.
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