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Unformatted text preview: Pneumoconiosis
Dr. Rasha Salama
PhD Community Medicine
Suez Canal University
Definition Pneumoconiosis is a generic
name covering the group of lung
disorders which result from the
inhalation of “inorganic dust”
“inorganic Classification Pneumoconiosis is usually
divided into three groups:
divided Major pneumoconiosis Minor pneumoconiosis Benign pneumoconiosis Major Pneumoconiosis
Major Inhalation of some dusts results in
“major fibrosis” of the lungs, which
results in interference of lung
architecture or lung function tests.
Silica Asbestos asbestosis
Asbestos Talc talcosis
Talc Coal coal workers pneumoconiosis
(anthracosis) Minor Pneumoconiosis
Minor 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.
lung These dusts include: Clay
Feldspar (non-fibrous silicates) Major pneumoconiosis
are called “ Fibrotic Pneumoconiosis”
Fibrotic Benign Pneumoconiosis
Benign 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.
disturbance Examples of Benign Pneumoconiosis
Examples 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
Hilar lymph nodes may be prominent.
The deposits in the lung disappear when
exposure is discontinued.
exposure Thank you
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- Fall '10