1. Asbestos Exposure
Frans Naude

2. Pneumoconioses Fibrotic Non fibrotic Silicosis, coal worker
pneumoconiosis,
asbestosis,
berylliosis,
talcosis
Non fibrotic
Siderosis
Stannosis
baritosis

3. Asbestos Exposure Inhalation of asbestos fibers Pleural Pulmonary
Extra thoracic
Pleural plaque
Diffuse pleural thickening
Pleural effusions
Malignant mesothelioma
Fibrosis (asbestosis)
Bronchial carcinoma
(usually in lower zones)
Round atelectasis (pseudo tumor)
Peritoneal mesothelioma
Other extra thoracic malignancies

4. Asbestosis
Def : diffuse interstitial pulmonary fibrosis that occurs secondary to the inhalation of asbestos fibers

5. Diagnostic imaging chest I 2-38

7. Radiography May be normal (10-20%) Peripheral lower zone predominance
Irregular reticular or small nodular opacities
"Shaggy" cardiac silhouette in advanced disease
Late: Endstage honeycombing
Pleural plaques (25%)
Lung cancer: Lower zone predominance in contrast
to the upper zone predominance in the general population of smokers
Progressive massive fibrosis extremely rare

8. Small subpleural nodules (straight arrows),
Patchy ground-glass opacities (curved arrows),
Interlobular septal thickening (arrowhead) suggestive of early-stage asbestosis.

9. Pleural plaque : band like pleural thickening (arrowheads) in the lower lobe of both lungs

10. Asbestosis : subpleural consolidation (arrow) in the lower lobe of the left lung, with reticulation, ground-glass opacities, and honeycombing

11. Pt with asbestos exposure: subpleural consolidation (arrow), pleural thickening (arrowheads) and effusion.

12. Parenchymal bands in asbestosis
Webb

13. Subpleural Lines
curvilinear opacity a few millimeters or less in thickness,
less than 1 cm from the pleural surface
nonspecific indicator of atelectasis, fibrosis, or inflammation
more common in patients who have asbestosis than in those who have IPF or other causes of UIP

15. Asbestosis VS idiopathic pulmonary fibrosis
IPF more basal and sub pleural fibrosis
presence of parietal pleural thickening in association with lung fibrosis is the most important feature differentiating asbestos-
induced pulmonary fibrosis from IPF
asbestos bodies in bronchoalveolar lavage fluid

16. Case
H/O asbestos exposure

20. References
RadioGraphics 2006; 26:59–77 Pneumoconiosis: Comparison of Imaging and Pathologic Findings
Diagnostic imaging chest I 2-38
High-Resolution CT of the Lung -webb