Separate types of interstitial pulmonary Disease
1-Pneumoconiosis :
Occupational lung disease due to inhalation of inorganic dust
A- Asbestosis It leads to
Interstitial Pulmonary pleural effusion Bronchogenic Mesothelioma
disease (non malignant) carcinoma
as above
B- Si1icosis à Interstitial. Pulmonary disease ( as above).
à T.B.
2- Allergic pneumonitis:
farmer lung = extrinsic allergic alveolitis due to inhalation of actinomycetes present in the ( hay).
C/PAfter exposure (by 6 hr.)
Cough Dyspnea Fever
So, with repeated exposure Interstitial pulmonary fibrosis developed

Source: Internal Medicine Book of Dr.Osama Mahmoud (Ain Shams University)