X-linked lymphoproliferative disease (also known as Duncan's disease or Purtilo syndrome) is a lymphoproliferative disorder.
Presentation
Strangely, in boys with X-linked lymphoproliferative disorder, there is an inability to mount an immune response to the Epstein-Barr virus (EBV), which often leads to death from bone marrow failure, irreversible hepatitis, and malignant lymphoma. [Source: Wikipedia 
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