Interstitial Lung Disease
February 15th, 2021
Overview
The chest x-ray has low sensitivity and specificity for the diagnosis of interstitial lung disease, and a high resolution CT is the imaging modality of choice.
Interstitial lung disease may be suggested by reticular or reticulonodular opacities on chest x-ray.
Example
- Increased interstitial markings with peripheral and basal predominance
![Increased interstitial markings with peripheral and basal predominance]()
Causes of Interstitial Lung Disease
ILD of Known Association
- Connective tissue disease - rheumatoid arthritis, scleroderma, systemic lupus erythematosus, Sjogren's syndrome, polymyositis / dermatomyositis
- Medications - methotrexate, nitrofurantoin, bleomycin
- Occupational exposure - silicosis, asbestosis
Granulomatous ILD
- Sarcoidosis
- Hypersensitivity pneumonitis
Idiopathic Interstitial Pneumonias
- Idiopathic pulmonary fibrosis
- Others - idiopathic non-specific interstitial pneumonia, acute interstitial pneumonia, cryptogenic organising pneumonia, lymphocytic interstitial pneumonia, desquamative interstitial pneumonia
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