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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

Pneumoconiosis

Dr. RashaSalama

PhD Community Medicine

Suez Canal University

Egypt

definition
Definition
  • Pneumoconiosis is a generic name covering the group of lung disorders which result from the inhalation of “inorganic dust”
classification
Classification
  • Pneumoconiosis is usually divided into three groups:
    • Major pneumoconiosis
    • Minor pneumoconiosis
    • Benign pneumoconiosis
major pneumoconiosis
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)
minor pneumoconiosis
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)
slide6
Major pneumoconiosis

and

  • Minor pneumoconiosis

are called

“ Fibrotic Pneumoconiosis”

benign pneumoconiosis
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.
examples of benign pneumoconiosis
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.