Fig. 9
From: Imaging indications and findings in evaluation of lung transplant graft dysfunction and rejection
Imaging findings showing evolution of bronchiolitis obliterans to restrictive allograft syndrome. The patient initially presented with decreased FEV1 and mid-flows. Initial axial CT images (a and b) show mosaic attenuation, likely due to air-trapping. Transbronchial biopsy was negative for infection and acute rejection and the diagnosis of bronchiolitis obliterans syndrome was made. Follow-up CT images (c and d) after 3 years show evolution of changes with upper lobe predominant subpleural pleuroparenchymal fibrotic changes typical of restrictive allograft syndrome