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Table 2 Parietal pleural plaques, diffuse pleural thickening and lung fibrosis in the patients with retroperitoneal fibrosis (RPF) and the asbestos-exposed controls.

From: Asbestos-related pleural and lung fibrosis in patients with retroperitoneal fibrosis

Radiological finding RPF without asbestos exposure RPF with asbestos exposure Controls with ≥ 10 fy of asbestos exposure
  N = 16
% (N)
<10 fy
N = 13
% (N)
≥ 10 fy
N = 9
% (N)
N = 18
% (N)
Pleural plaques     
   class 0 68.8 (11) 23.1 (3) 11.1 (1) 22.2 (4)
   class 1 19.8 (3) 15.4 (2) 22.2 (2) 27.8 (5)
   class 2 12.5 (2) 38.5 (5) 33.3 (3) 27.8 (5)
   class 3–5 0 (0) 23.1 (3) 33.3 (3) 22.2 (4)
DPT     
   class 0 75.0 (12) 46.2 (6) 44.4 (4) 61.1 (11)
   class 1 6.3 (1) 0 (0) 11.1 (1) 11.1 (2)
   class 2 18.8 (3) 23.1 (3) 0 (0) 33.3 (3)
   class 3 0 (0) 30.8 (4) 44.4 (4) 22.2 (2)
Lung fibrosis     
   class 0 87.5 (14) 69.2 (9) 66.7 (6) 77.8 (14)
   class 1 12.5 (2) 15.4 (2) 22.2 (2) 11.1 (2)
   class 2 0 (0) 7.7 (1) 0 (0) 0 (0)
   class 3–5 0 (0) 7.7 (1) 11.1 (1) 11.1 (2)
  1. (fy = fiber years, DPT = diffuse pleural thickening)