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Histopathological changes in the liver after allogeneic bone marrow transplantation
Journal of Clinical Pathology
|April 1, 1980
Summary
Liver lesions after bone marrow transplant can indicate graft-versus-host disease (GvHD). Bile duct atypia is a key indicator, but diagnosis requires biopsy due to non-specific findings and sampling issues.
Area of Science:
- Hepatology
- Transplantation Immunology
- Gastroenterology
Background:
- Allogeneic bone marrow transplantation (BMT) can lead to various complications.
- Graft-versus-host disease (GvHD) is a significant post-transplant complication affecting multiple organs.
Purpose of the Study:
- To investigate and categorize liver lesions in patients following allogeneic bone marrow transplantation.
- To determine the association of specific liver pathologies with graft-versus-host disease (GvHD).
Main Methods:
- Examination of postmortem and surgical liver specimens from 20 patients who underwent allogeneic BMT.
- Categorization of observed liver lesions into five major groups: bile duct atypia, veno-occlusive disease, hepatocyte necrosis, opportunistic infections, and non-specific abnormalities.
Main Results:
- Bile duct atypia, often with portal tract fibrosis, was observed in 8 cases and strongly suggested as a manifestation of GvHD.
- Veno-occlusive disease was present in 2 cases; GvHD evidence existed, but irradiation and 6-thioguanine were potential confounding factors.
- Foci of hepatocyte necrosis were non-specific and did not correlate well with bile duct lesions, making GvHD attribution uncertain.
- Opportunistic infections were identified in 3 cases.
Conclusions:
- Bile duct lesions in the liver are a potential specific indicator of graft-versus-host disease (GvHD) post-BMT.
- Hepatic GvHD lacks distinct clinical and biochemical markers, necessitating liver biopsy for diagnosis.
- The patchy nature of bile duct lesions may pose sampling challenges in needle biopsies, requiring further investigation.