Abstract
We present the clinical course of three neonates with proven enteroviral infection and an initial clinical picture suggestive of hemophagocytic lymphohistiocytosis (HLH). After a complete workup, only one was treated for HLH. Of particular interest, the first newborn presented with hemophagocytic cells in the cerebrospinal fluid (CSF) and proved to have enteroviral meningoencephalitis but was ultimately not diagnosed with HLH. A fourth infant, who fulfilled the diagnostic criteria for HLH but did not have enteroviral infection, is included for comparison. We suggest that severe neonatal enteroviral infection and HLH are difficult to distinguish. Careful assessment is recommended, as prognosis and treatment differ between these two entities. Literature regarding neonatal enteroviral infection and HLH is reviewed, to demonstrate the continuum between the inflammation triggered by enteroviral infection and the occurrence of HLH, as well as their comparable CSF findings.
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