“…In addition, 1,383 with CT evidence of lung diseases and/or previous surgery; emphysema, bronchiectasis, pulmonary neoplasm, asbestosis, interstitial lung disease, pneumonia, atelectasis, round atelectasis, pulmonary edema, pneumothorax, pleural effusion, previous infectious sequelae, diffuse pleural thickening, previous pulmonary resection and pleurodesis, were excluded. In matters of emphysema, we only included trace centrilobular emphysema by CT-definable subtypes of chronic obstructive pulmonary disease, which is minimal centrilobular lucencies, occupying <0.5 percent of lung zone (14). Of the remaining 33 with pleural plaques alone on CT, 7 were excluded due to the absence of pulmonary function test (PFT).…”