title: A boy with fever, lymphadenopathy, hepatosplenomegaly, and lymphocytosis.
abstract: Proliferation of the lymphoid system should arouse suspicion of a potentially serious illness. We present a 4.5-year-old boy who developed fever, vomiting, diarrhea, lymphadenopathy, hepatosplenomegaly, lymphocytosis, anemia, thrombocytopenia, and increased liver enzymes. Lymph node and bone marrow biopsies showed lymphoproliferation, Epstein-Barr virus (EBV) infection, and hemophagocytosis leading to the diagnosis of hemophagocytic lymphohistiocytosis (HLH). Chemotherapy was initiated for HLH with dexamethasone, etoposide, and cyclosporine. Because of a high level of EBV viremia, rituximab was added a few days later and resulted in a remarkable drop in the EBV in the circulation but not in the cerebrospinal fluid. However, the patient succumbed to encephalitis, pneumonia, and cardiopulmonary failure. Autopsy revealed the presence of EBV in the brain, indicating the ineffectiveness of rituximab therapy in treating central nervous system infection with EBV.
authors.affiliation: Section of Allergy and Immunology, Louisiana State University Health Sciences Center, Shreveport, LA 71130-3832, USA.
authors.forename: Ujwala
authors.initials: U
authors.lastname: Kaza
authors.forename: Adina Kay
authors.initials: AK
authors.lastname: Knight
authors.forename: Majed
authors.initials: M
authors.lastname: Jeroudi
authors.forename: Joseph A
authors.initials: JA
authors.lastname: Bocchini
authors.forename: Amal
authors.initials: A
authors.lastname: Anga
authors.forename: Sami L
authors.initials: SL
authors.lastname: Bahna
mesh_terms: D000911:Antibodies, Monoclonal / Q000627:therapeutic use; D058846:Antibodies, Monoclonal, Murine-Derived; D002675:Child, Preschool; D016572:Cyclosporine / Q000627:therapeutic use; D003907:Dexamethasone / Q000627:therapeutic use; D003937:Diagnosis, Differential; D020031:Epstein-Barr Virus Infections / Q000175:diagnosis / Q000188:drug therapy; D005047:Etoposide / Q000627:therapeutic use; D005334:Fever; D006529:Hepatomegaly / Q000175:diagnosis; D006801:Humans; D008206:Lymphatic Diseases; D008218:Lymphocytosis / Q000175:diagnosis; D051359:Lymphohistiocytosis, Hemophagocytic / Q000175:diagnosis* / Q000188:drug therapy; D008297:Male; D000069283:Rituximab; D013163:Splenomegaly / Q000175:diagnosis
chemical_list: D000911:Antibodies, Monoclonal; D058846:Antibodies, Monoclonal, Murine-Derived; D000069283:Rituximab; D005047:Etoposide; D003907:Dexamethasone; D016572:Cyclosporine