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Pneumoconiosis

Pneumoconiosis. Dr. Rasha Salama PhD Community Medicine Suez Canal University Egypt. Definition. Pneumoconiosis is a generic name covering the group of lung disorders which result from the inhalation of “inorganic dust”. Classification .

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Pneumoconiosis

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  1. Pneumoconiosis Dr. RashaSalama PhD Community Medicine Suez Canal University Egypt

  2. Definition • Pneumoconiosis is a generic name covering the group of lung disorders which result from the inhalation of “inorganic dust”

  3. Classification • Pneumoconiosis is usually divided into three groups: • Major pneumoconiosis • Minor pneumoconiosis • Benign pneumoconiosis

  4. Major Pneumoconiosis • Inhalation of some dusts results in “major fibrosis” of the lungs, which results in interference of lung architecture or lung function tests. • As: • Silica  silicosis • Asbestos  asbestosis • Talc  talcosis • Coal  coal workers pneumoconiosis (anthracosis)

  5. Minor Pneumoconiosis • Inhalation of some dusts results in “minor fibrosis” of the lungs • There is minimal fibrosis of the lungs without interference of lung architecture or lung function tests. • These dusts include: • Clay • Koalin • Mica • Feldspar (non-fibrous silicates)

  6. Major pneumoconiosis and • Minor pneumoconiosis are called “ Fibrotic Pneumoconiosis”

  7. Benign Pneumoconiosis • There isn't any reaction in the lungs, but dust deposition casts a shadow in x-ray of the lung. There is no fibrosis and no disturbance of lung functions.

  8. Examples of Benign Pneumoconiosis • It can result from the inhalation of: • Iron dust sidrosis • Tin dust stannosis • Calcium dust chalicosis • They are characterized by the presence of small rounded dense opacities on a chest film due to perivascular collections of dusts. • Hilar lymph nodes may be prominent. • The deposits in the lung disappear when exposure is discontinued.

  9. Thank you

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