title: Graft-versus-lymphoma effect in a 64-year-old caucasian woman after allogeneic stem-cell transplantation: a case report.
abstract: BACKGROUND
  The existence of a graft-versus-lymphoma effect is well established. When lacking a firm diagnosis, however, the clinician is challenged to to weigh the potential benefits of the graft-versus-lymphoma effect against potential dangers of graft-versus-host disease as well as against generalized (viral) infections.
  
  
  METHODS
  We present evidence for a graft-versus-lymphoma effect in a 64-year-old caucasian woman with a transplanted peripheral blood-stem-cell graft from her Human Leukocyte Antigen-identical sister, and propose diagnostic measures to distinguish between graft-versus-host effect, and against viral disease or drug-induced reactions.
  
  
  CONCLUSIONS
  We were able to identify an allogeneic graft-reaction against progressive lymphoma alongside an erythema consistent with acute graft-versus-host disease of the skin. Establishing a firm diagnosis enabled us to decide against T-cell suppression (such as by using cyclosporine). Anti-lymphoma activity was favoured, by means of the allogeneic graft, local radiation and immunotherapy. This illustrates the importance of a sound differential diagnosis of erythema after allogeneic stem-cell transplantation, including assessment of viral disease of the affected tissue.
authors.affiliation: Department of Internal Medicine IV, Oncology and Hematology, Martin-Luther-University Halle-Wittenberg, Ernst-Grube-Str, 40, D-06097 Halle, Germany. gerhard.behre@medizin.uni-halle.de.
authors.forename: Gerhard
authors.initials: G
authors.lastname: Behre
authors.forename: Thomas
authors.initials: T
authors.lastname: Weber
authors.forename: Sebastian
authors.initials: S
authors.lastname: Theurich
authors.forename: Maximilian
authors.initials: M
authors.lastname: Christopeit