Epstein-Barr virus associated lymphoproliferative disorder with fatal involvement of the gastrointestinal tract in an infant.

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Abstract
A case of fatal Epstein-Barr virus (EBV) associated lymphoproliferative disorder is reported in an 11 month old female. Heavy infiltrates of CD20 + and EBV EBER mRNA expressing lymphoid blasts were found to cause a series of ulcers along the entire length of the gastrointestinal tract and there was an ileal perforation. Similar infiltrates were also found in lymph nodes, spleen, and liver. Although blood phenotypic analysis performed shortly before her death revealed a severe decrease in T lymphocytes, neither the patient nor other members of her family had a history of primary or secondary immunodeficiency. EBV infection is common in children. However, such a fatal infection of the virus has not apparently been described previously in infants without pre-established immunodeficiency.