To compare the characteristics and outcomes of patients who developed interstitial lung disease (ILD) after allogeneic HSCT with those who developed bronchiolitis obliterans syndrome (BOS).
Key Findings:
Cumulative incidence of BOS at 3 years post-HSCT was 10%; ILD was 5%, indicating a significant difference in incidence rates.
Histological patterns of post-HSCT ILD included organizing pneumonia and nonspecific interstitial pneumonia, highlighting the diversity of ILD presentations.
Interstitial pathology often coexisted with obliterative bronchiolitis in post-HSCT patients, suggesting a complex relationship between these conditions.
Interpretation:
The findings suggest that ILDs may be part of a spectrum of lung chronic graft-versus-host disease (cGVHD), given their association with obliterative bronchiolitis and other manifestations of GVHD.
Limitations:
Retrospective design may introduce bias.
Limited generalizability due to single-center study.
Conclusion:
Further research is needed to establish ILDs as a recognized manifestation of chronic pulmonary GVHD and to understand their clinical implications, which could significantly impact patient management.
by Gabrielle Archer, Ingrid Berger, Louise Bondeelle, Constance de Margerie-Mellon, Stéphane Cassonnet, Régis Peffault de Latour, David Michonneau, Sylvie Chevret, Anne Bergeron
