<unk>  <unk> D) is a common complication of allogeneic bone marrow transplantation in which functional immune cells in the transplanted marrow recognize the recipient as "foreign" and mount an immunologic attack. It is a pathologic condition characterized by recipient tissue damage that arise from immunological activation of donor T lymphocytes. Donor T cells typically mount a response against foreign host cells in the gastrointestinal system, liver, and skin. It occurs in 40-60% of patients undergoing stem cell transplant. Acute<unk> D typically occurs within 100 days of transplant. Chronic<unk> D occurs after 100 days from transplant.  Nearly 40% of patients will develop some form of<unk> D, whether it is acute or chronic.
Graft-versus-host disease
Transplant rejection
Graft versus host
Cardiac allograft vasculopathy pathophysiology
Radiation fibrosis
Posttransplantation lymphoproliferative disorder
HIV associated nephropathy
Herxheimer reaction