text: Post-transfusion purpura due to HPA-1a immunization in a male patient: response to subsequent multiple HPA-1a-incompatible red-cell transfusions.
  We report a male patient who developed post-transfusion purpura. Thrombocytopenia did not recur when intravenous IgG was given before the transfusion of platelet-depleted washed red-cell concentrates.