Occupational Lung Disease

Question 1

Coal workers

Answer 1

coal

silicosis

Question 2

Common occupational lung disease in the US?

Answer 2

• Silicosis/CWP
• Hypersensitivity pneumonitis
• Occupational asthma
• Asbestosis
• Hard metal pneumoconiosis

Question 3

Pneumoconiosis

Answer 3

• Permanent deposition of substantial amounts of particulate matter in the lungs
• usually of occupational or environmental origin
• tissue reacton to its presence

Question 4

Silicosis

Answer 4

• nodules with perilymphatic distribution
• upper lung and posterior predominance
• mediastinal and hilar adenopathy
• pseudoplaques from conglomeration of subpleural nodules
• PMF - progressive massive fibrosis
  
  • large fibrotic consolidative masses
  • dense calcifications
  • pericicatricial emphysema
• silicoproteinosis
• ccomplications
  
  • TB
  • malignancy

Question 5

CWP

Answer 5

• also exposured silica
• HRCT - identical to silicosis

Question 6

Asbestos

Answer 6

• fibrous minerals
• asbestos-related disease (previous asbestos exposure)
• asbestosis
  
  • pleural effusion
  • PARIETAL pleural plaques
  • diffuse pleural thickening
• asbestosis
  
  • lung fibrosis
• mesothelioma
• lung carcinoma

Question 7

Asbestos-related pleural disease

Answer 7

• calcified pleural plaques
• diffuse pleural thickening
• pleural effusions (early, but unusual)

Question 8

Asbestosis

Answer 8

• intralobular linear opacities
• irregular interlobular septal thickening
• subplerual curvilinear opacities
• early - small peripheral centrilobular nodules
• parenchymal bands
  *

Question 9

Hard metal pneumoconiosis

Answer 9

• Cobalt
• Tungsten carbide
• GGO
• consolidation
• reticulation
• tractional bronchiectasis
• nodules

Question 10

Berylliosis

Answer 10

• Beryllium used in aerospace, automotive, energy, nuclear, medical and electronic industries
• never acute disease
• chronic disease
• HRCT
  
  • interlobular septal thickening
  • perilymphatic nodules
  • lymaphadenopathy

Question 11

Hypersensitivity pneumonitis

Answer 11

• acute - almost never seen
• subacute
  
  • GGO
  • GG centrilobular nodules
  • middle and lower lung zone
  • lobular air trapping
• chronic
  
  • irregular linear opacities
  • honey combing
  • features of subacute HP

Question 12

Obliterative Bronchiolitis

Answer 12

• mosaic attenuation on inspiration
• air trapping on expiration