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Clinical Significance of Skin Biopsies in the Diagnosis and Management of Graft-vs-Host Disease in Early Postallogeneic Bone Marrow Transplantation
Youwen Zhou, MD, PhD;
Michael J. Barnett, BM, FRCP;
Jason K. Rivers, MD, FRCPC
Arch Dermatol. 2000;136:717-721.
Objective To determine the value of skin biopsies in the management of suspected graft-vs-host disease (GVHD) within 30 days of allogeneic bone marrow transplantation (BMT).
Design Retrospective study based on review of a BMT database.
Setting Leukemia/BMT ward of a tertiary care, university teaching hospital.
Patients One hundred and eighty-seven consecutive patients who received allogeneic BMT between January 1, 1994, and June 30, 1997, at Vancouver General Hospital, Vancouver, British Columbia.
Main Outcome Measures (1) Skin biopsy frequency for patients with rashes suggestive of acute GVHD; (2) clinical significance of skin biopsy in the management of patients with suspected acute GVHD after BMT; (3) relationship between severity of clinical GVHD and the likelihood to receive GVHD therapy; and (4) relationship between biopsy status or biopsy result and outcome of BMT (acute and chronic GVHD, transplant-related mortality, and overall and event-free survival).
Results During the early post-BMT period (<30 days after BMT), 88 patients had rashes suggestive of acute GVHD; of these, 51 (58%) underwent skin biopsy to confirm the diagnosis. Skin biopsies were performed more often for higher clinical stages of cutaneous GVHD. There was no significant difference between the patients with positive biopsy findings and those with negative findings, either in the clinical severity of acute GVHD or in likelihood to receive treatment for GVHD. Most (85%) of the patients who underwent biopsies and received GVHD therapy had treatment initiated before skin biopsies were performed or before the results were available. The higher the clinical grade of overall acute GVHD, the more likely it was that the patients were treated for GVHD (P<.001). The outcome of BMT was not influenced by the skin biopsy status or biopsy result.
Conclusions The biopsy findings correlated poorly with the clinical severity of skin rash suggestive of acute GVHD soon after BMT. The decision to treat suspected acute GVHD depended not on skin biopsy findings but rather on clinical severity of acute GVHD. In this regard, skin biopsy has a limited role in the management of patients early after allogeneic BMT.
From the Divisions of Dermatology (Drs Zhou and Rivers) and Hematology (Dr Barnett), Department of Medicine, Vancouver General Hospital and University of British Columbia, Vancouver.
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