Graft-versus-Host-Reaktion

Calcinosis
cutis bei kutaner Graft-versus-Host Reaktion nach Stammzelltransplantation: Die Computertomografie (links 3 Schichten axial, rechts Volumen Rendering mit unterschiedlicher Transparenz der Gewebe) zeigt die ausgeprägten flächigen Verkalkungen. Beachte auch die Verkalkung in der V. cava inferior, die als Residuum einer Cavathrombose zu deuten ist.
Wikipedia • CC BY-SA 4.0
Preschooler
status post bone marrow transplant with abdominal pain. AXR AP shows diffuse pneumatosis intestinalis of the colon from the cecum to the rectum.The diagnosis was graft versus host disease.
pediatricimaging.org • CC-by-nc-sa 4.0
Teenager
status post bone marrow transplant with abdominal pain. AXR AP from a small bowel follow through shows mild thickening of the small bowel folds in the distal jejunum and proximal ileum in the middle of the image.The diagnosis was graft versus host disease.
pediatricimaging.org • CC-by-nc-sa 4.0
The
crazy-paving pattern: a radiological-pathological correlation. Graft-versus-host disease. CT revealed multiple areas of ground-glass attenuation and consolidations. There was also a superimposition of multiple lines: thickened inter- and intralobular septa and intralobular fibrosis
insightsimaging.springeropen.com • CC-by-2.0
Radiopaedia • CC-by-nc-sa 3.0 • de

Graft versus host disease (GvHD) is a frequent complication of allogeneic post hematopoietic stem cell transplantation, commonly known as bone marrow transplantation. Anti-rejection drugs have reduced the incidence, although it does still frequently occur.

Pathology

Graft versus host disease can present early/acute (<100 days) or late/chronic (>100 days) post-hematopoietic stem cell transplantation and is one of the major complications of this treatment. The skin, gastrointestinal tract (especially small bowel), and liver are the principal affected organs. Effects on the gastrointestinal tract are the most commonly described in the radiology literature.

End-organ damage is the result of recipient's immune system (mainly antigen presenting cells) interacting with donor T-cell, leading to the latter's activation with a resultant cell-mediated and inflammatory cascade . The pathophysiology of chronic GvHD is not well understood.

Radiographic features

Features depend upon the organ involved.

Fluoroscopy
Gastrointestinal tract

On small bowel barium studies, the bowel is described as having a "ribbon" appearance with fold thickening. Other described features are :

  • edema of mucosal folds in ileum and jejunum
  • effacement of folds towards the ileum: can give featureless (atrophic) loops
  • thickening of the bowel wall
  • spasms and stenosis with prestenotic dilatation
  • in the active phase, the bowel can appear shortened
CT
Abdomen
Gastrointestinal tract

Described CT features include:

  • bowel wall thickening:
    • considered the most consistent finding
    • can affect small or large bowel or both (commonest )
  • bowel dilatation
  • mucosal enhancement
  • engorgement of the vasa recta adjacent to affected bowel segments
  • gastric wall thickening
Extraintestinal findings in the abdomen 

Reported features include:

  • mesenteric stranding: ~60%
  • ascites
  • biliary abnormalities
  • urinary excretion of orally administered Gastrografin
Thorax 

See: thoracic manifestations of graft versus host disease

Siehe auch:
Assoziationen und Differentialdiagnosen zu Graft-versus-Host-Reaktion: