title: CT features of hepatic venoocclusive disease and hepatic graft-versus-host disease in patients after hematopoietic stem cell transplantation.
abstract: OBJECTIVE
  We conducted this study to evaluate whether CT scans could be used to differentiate hepatic venoocclusive disease from hepatic graft-versus-host disease in patients treated with hematopoietic stem cell transplantation.
  
  
  METHODS
  We retrospectively evaluated 18 patients (eight women, 10 men; mean age, 42.4 years) after hematopoietic stem cell transplantation with biopsy-proven hepatic venoocclusive disease (n = 5), hepatic graft-versus-host disease (n = 6), or both (n = 7). Two radiologists reviewed abdominal and pelvic CT scans for hepatomegaly (> 18 cm), splenomegaly (> 13 cm), size of main portal and right hepatic veins, presence of periportal edema, gallbladder wall edema, hydropic gallbladder, ascites, and small-bowel wall thickening. CT and histopathology findings were correlated using analysis of variance and Fisher-Free-man-Holton tests.
  
  
  RESULTS
  Ascites and periportal edema were present in all five patients with venoocclusive disease, but of six patients with graft-versus-host disease, ascites was seen in two (p < 0.05) and periportal edema in only one (p < 0.05). Small-bowel wall thickening was encountered in five patients with graft-versus-host disease and in none with venoocclusive disease (p < 0.05). The right hepatic vein diameter in patients with venoocclusive disease (mean, 0.27 cm) was significantly smaller than the right hepatic vein diameter in patients with graft-versus-host disease (mean, 0.87 cm; p < 0.05).
  
  
  CONCLUSIONS
  In patients treated with hematopoietic stem cell transplantation, CT findings of periportal edema, ascites, and a narrow right hepatic vein suggest venoocclusive disease rather than graft-versus-host disease. Small-bowel wall thickening suggests graft-versus-host disease.
authors.affiliation: Division of Abdominal Imaging and Intervention, Department of Radiology, Brigham and Women's Hospital, Harvard Medical School, Radiology Ste., c/o One Brigham Circle, 1620 Tremont St., Boston, MA 02120, USA. mehmeterturk@superonline.com
authors.forename: Sukru Mehmet
authors.initials: SM
authors.lastname: Erturk
authors.forename: Koenraad J
authors.initials: KJ
authors.lastname: Mortelé
authors.forename: Christoph A
authors.initials: CA
authors.lastname: Binkert
authors.forename: Jonathan N
authors.initials: JN
authors.lastname: Glickman
authors.forename: Maria-Raquel
authors.initials: MR
authors.lastname: Oliva
authors.forename: Pablo R
authors.initials: PR
authors.lastname: Ros
authors.forename: Stuart G
authors.initials: SG
authors.lastname: Silverman
mesh_terms: D000328:Adult; D005260:Female; D006086:Graft vs Host Disease / Q000000981:diagnostic imaging* / Q000209:etiology*; D018380:Hematopoietic Stem Cell Transplantation / Q000009:adverse effects*; D006504:Hepatic Veno-Occlusive Disease / Q000000981:diagnostic imaging* / Q000209:etiology*; D006801:Humans; D008107:Liver Diseases / Q000000981:diagnostic imaging* / Q000209:etiology*; D008297:Male; D008875:Middle Aged; D012189:Retrospective Studies; D014057:Tomography, X-Ray Computed