Fulminant Course of Infectious Mononucleosis with Virus-associated Hemophagocytic Syndrome

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Abstract
A fatal case of infectious mononucleosis due to serologically verified Epstein-Barr virus infection in a previously healthy 30-year-old man is presented. The clinical course was characterized by severe prostration, persistently high spiking fever, and continuous development of enlarged lymph nodes. Hematologic examination revealed peripheral leukopenia and thrombocytopenia, and in the bone marrow an increased number of benign histiocytes showed marked hemophagocytosis. At autopsy abnormal lymphoid infiltrates were present in several tissues. The pathogenesis of this infection-associated hemophagocytic syndrome is discussed in terms of the possibilitty of an impaired immune response to infectious agents.