Intensification of therapeutic regimens, improved patient survival, an
d advances in cytokine and cellular therapies have led to increasingly
complex requirements for transfusion and stem cell support in cancer
treatment. This article focuses on current and evolving issues in red
blood cell, platelet, and granulocyte transfusion support, as well as
measures to avoid increasingly important complications of transfusion
therapy, such as alloimmunization, graft-versus-host disease, cytomega
lovirus infection, and immunomodulation. Issues concerning current app
lications of hematopoietic stem cell transplantation and future prospe
cts also are discussed.