Fig. 10. A 55-year-old male with complicated coal worker pneumoconiosis. Non-contrast axial computed tomography images of the upper lung in lung (A) and soft tissue (B) windows show mass like opacities with subtle relative hyperattenuation relative to the aortic blood pool (black arrows in A) and internal coarse calcification (white arrows in B), consistent with progressive massive fibrosis. There is associated architectural distortion (C). Findings are consistent with progressive massive fibrosis. Small nodules are also present in continuity and adjacent to the upper lung masses. There are calcified mediastinal and left hilar lymph nodes (white arrows in D).
