Table 3

Prevalence of non-malignant incidental findings on baseline LDCT

Incidental findingLDCT presence
(n and % of total cohort)
Emphysema
 TOTAL3711 (33.4)
 Mild2423 (21.8)
 Moderate900 (8.1)
 Severe331 (3.0)
 Very severe57 (0.5)
Bronchiectasis
 Total818 (7.4)
 Mild711 (6.4)
 Moderate91 (0.8)
 Severe16 (0.14)
Interstitial lung abnormality
 Total528 (4.8)
 Mild354 (3.2)
 Moderate62 (0.6)
 Severe112 (1.0)
Coronary artery calcification
 Total7141 (64.2)
 Mild4035 (36.3)
 Moderate2049 (18.4)
 Severe1057 (9.5)
Thoracic aortic aneurysm
 Total306 (2.8)
 4.0–5.5 cm301 (2.7)
 >5.5 cm5 (0.1)
Abdominal aortic aneurysm
 Total2
 ≥3–5 cm1
 >5 cm1
Aortic valve calcification
 Total1808 (16.3)
 Central409 (3.7)
 Peripheral962 (8.7)
 Both437 (3.9)
Osteoporotic wedge fracture
 Total801 (7.2)
>50%132 (1.2)
 <50%669 (6.0)
Pleural findings
 Bilateral pleural effusions7 (0.06)
 Diffuse pleural thickening92 (0.82)
 Pleural plaques599 (5.4)
Hiatus hernia
 Present1064 (9.6)
  • LDCT, low-dose CT.