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A boy with fever, lymphadenopathy, hepatosplenomegaly, and lymphocytosis

Ujwala Kaza1, Adina Kay Knight, Majed Jeroudi

  • 1Section of Allergy and Immunology, Louisiana State University Health Sciences Center, Shreveport, LA 71130-3832, USA.

Allergy and Asthma Proceedings
|April 24, 2008
PubMed

Insights

A pediatric case of hemophagocytic lymphohistiocytosis (HLH) due to Epstein-Barr virus (EBV) infection highlights challenges in treatment. Rituximab effectively reduced EBV viremia but failed to clear central nervous system infection, leading to fatal encephalitis.

Area of Science:

  • Pediatric Hematology/Oncology
  • Infectious Diseases
  • Immunology

Background:

  • Lymphoid system proliferation can indicate serious illness.
  • Epstein-Barr virus (EBV) is a common viral infection with potential for severe complications in immunocompromised individuals.

Observation:

  • A 4.5-year-old boy presented with fever, vomiting, diarrhea, lymphadenopathy, hepatosplenomegaly, lymphocytosis, anemia, and thrombocytopenia.
  • Biopsies confirmed lymphoproliferation, EBV infection, and hemophagocytosis, leading to a diagnosis of hemophagocytic lymphohistiocytosis (HLH).

Findings:

  • Treatment with dexamethasone, etoposide, and cyclosporine was initiated for HLH.
  • Addition of rituximab significantly reduced EBV viremia but did not clear EBV from the cerebrospinal fluid.
  • The patient ultimately succumbed to encephalitis, pneumonia, and cardiopulmonary failure.

Implications:

  • This case underscores the critical need for effective strategies to treat EBV-associated HLH, particularly CNS involvement.
  • Rituximab's limited efficacy in treating EBV central nervous system infections highlights a significant therapeutic challenge.
  • Further research is warranted to develop novel treatments targeting EBV in the CNS for HLH patients.

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