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For further information, see CMDT Part 9-32: Occupational Pulmonary Diseases

Key Features

  • An occupational pulmonary disease resulting from macrophages ingesting inhaled coal dust

Clinical Findings

  • Simple coal worker's pneumoconiosis is usually asymptomatic

  • Pulmonary function tests may be normal

  • Complicated disease, "progressive massive fibrosis," resembles complicated silicosis, with conglomeration and contraction in upper lung zones


  • Chest radiograph shows diffuse small opacities prominent in upper lungs


  • Supportive

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