Chapter 101. Hemolytic Anemias and Anemia Due to Acute Blood Loss (Part 17)
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Bone Marrow Failure—Relationship between PNH and AA It is not unusual that patients with firmly established PNH have a previous history of well-documented AA. On the other hand, sometimes a patient with PNH becomes less hemolytic and more pancytopenic and ultimately has the clinical picture of AA. Since AA is probably an organ-specific autoimmune disease in which T cells cause damage to hematopoietic stem cells, the same may be true of PNH, with the specific proviso that the damage spares PNH stem cells. Skewing of the T cell repertoire in patients with PNH supports this notion. In addition, in...
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