Bilateral Spontaneous Pneumothorax in Chronic Silicosis: A Case Report
Figure 2
(a) Lung parenchyma showed collagenous nodules (arrow) (H&E ×100), (b) silicotic nodule: central zone of whorls of hyalinised fibrous tissue, midzone of concentrically arranged collagen fibres, and outer zone of randomly orientated collagen fibres and inflammatory cells (H&E ×200), (c) periphery of the nodules with dust laden macrophages and lymphoid cells (H&E ×200), inset: dust laden macrophages (H&E ×400), and (d) polarized light microscopy, white spots which represent silica crystals (white arrow).
