Journal
PEDIATRIC BLOOD & CANCER
Volume 50, Issue 5, Pages 1070-1072Publisher
WILEY
DOI: 10.1002/pbc.21438
Keywords
familial hemophagocytic lymphohistiocytosis (FHLH); perforin deficiency; Epstein-Barr virus (EBV)
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Familial hemophagocytic lymphohistiocytosis (FHLH) is an autosomal recessive disorder of cytotoxic cell function that results in abnormal proliferation of benign lymphocytes and histiocytes in response to infectious stimuli. FHLH generally occurs in very young children, and typically presents with fever, cytopenias, coagulopathy, lymphadenopathy, and hepatosplenomegaly. Central nervous system involvement occurs frequently and may precede the development of systemic symptoms by months to years. We report a case of an 18-year-old male with a 2-year history of symptoms attributed to a demyelinating disorder, who succumbed to rapidly progressive hemophagocyte lymphohistiocytosis. Post-mortem, two distinct perforin mutations were identified. We discuss the central nervous system and genetic findings in this unusual presentation of familial hemophagocytic lymphohistiocytosis.
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