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Radiology, Vol 199, 265-268, Copyright © 1996 by Radiological Society of North America

ARTICLES

Acute graft-versus-host disease in children: abdominal CT findings

LF Donnelly and CL Morris
Department of Radiology, Children's Hospital Medical Center, Cincinnati, OH 45229, USA.

PURPOSE: To review the computed tomographic (CT) appearance of acute gastrointestinal graft-versus-host disease (GVHD) in children. MATERIALS AND METHODS: Sixteen abdominal CT scans obtained in 12 children with acute gastrointestinal GVHD who underwent allogeneic bone marrow transplantation (BMT) were compared with 16 CT scans obtained in autologous bone marrow recipients not at risk for GVHD (control group). Autopsy findings in six patients with GVHD were compared with CT findings. RESULTS: All CT scans in patients with GVHD showed an abnormally enhanced, thin mucosal layer of bowel wall involving fluid- filled, dilated, poorly opacified bowel loops from the duodenum to the rectum. This corresponded histologically to mucosal destruction and replacement by a thin layer of highly vascular granulation tissue. Bowel wall thickening was often absent. Infiltration of mesenteric fat was seen in 91% of patients The control group showed no similar abnormalities. CONCLUSION: Acute gastrointestinal GVHD characteristically appears on CT scans as multiple, diffuse, fluid- filled bowel loops with a thin, enhancing layer of bowel wall mucosa. Bowel wall thickening often is absent.


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