Austin Journal of Lung Cancer Research is an open access, peer reviewed, scholarly journal committed to publication of unique contributions concerned with the causes, pathogenesis, diagnosis, prevention and management of lung cancer. Lung cancer occurs when the cells of lung divide uncontrollably and form tumor. Austin Journal of Lung Cancer Research accepts original research articles, review articles, case reports, clinical images and rapid communication on all the aspects of this disease.

1. PNEUMOCONIOSIS

2. HISTORY
It is likely that humans have suffered
from occupational lung disease since the
change from hunting to agriculture as a
means of providing food.
In roman times it was recorded that
mining was a dangerous trade, fit only for
convicts and slaves.
The first recorded mention of
breathlessness among handlers of grain
was done by Ramazzini, the father of
occupational medicine, in 1713.
BERNARDINUS
RAMAZZINI

3. DEFNITION
Pneumoconiosis is a lung disease
due to exposure of lung for
variable period to dust in size
range of 0.5 to 3 microns leading
to lung fibrosis and other
complications.

4. HAZARDS OF DUST
PARTICLES ON LUNG
 Chemical composition
 Fineness
 Concentration of dust in air
 Health status of the person
exposed
 Period of exposure

5. VARIOUS DUST RELATED
DISEASES
 Silicosis- from silica dust
 Asbestosis- from asbestos dust
 Coal workers pneumoconiosis- from coal
dust
 Byssinosis- from cotton dust
 Bagassosis- from sugarcane dust
 Farmer’s lung- from hay dust or mold spores
or other agriculture products.
 Berylliosis- from beryllium

6. TYPES
Pneumoconiosis is usually divided into
three groups:
Major pneumoconiosis
Minor pneumoconiosis
Benign pneumoconiosis

7. MAJOR
PNEUMOCONIOSIS
 Inhalation of some dusts results in “major
fibrosis” of the lungs, Which results in
interference of lung architecture or lung
function tests.
 Examples are:
Silica- silicosis
Asbestos- asbestosis
Coal- anthracosis
Healthy lung Silicotic lung

8. 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:
Mica pneumoconiosis
Kaolin(china clay) pneumoconiosis

9. 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.
 It results from inhalation of:
Iron dust- siderosis
Tin dust- stannosis
Calcium dust- chalcosis
 These deposits in the lung disappear when
exposure is discontinued.

10. SYMPTOMS
Shortness of breath
Cough
Lots of phlegm

11. PREVENTIVE MEASURES
Prohibit dry cutting Promote wet cutting

12. PREVENTIVE MEASURES
Personal protective equipments:

13. DIAGNOSIS
Personal history of work
exposure
Physical examination
Chest X-ray
CT scan of the chest
Pulmonary function
studies
biopsy

14. There are no specific treatments or
medications for pneumoconiosis, and
there is no cure.
Most treatments for patients with
pneumoconiosis are aimed at limiting
further damage to the lung, decreasing
symptoms and improving quality of life.
TREATMENT

15. Thank you