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High resolution CT in respiratory bronchiolitis-associated interstitial lung disease
R M Holt1, R A Schmidt, J D Godwin
1Department of Radiology, University of Washington, Seattle 98195.
Journal of Computer Assisted Tomography
|January 1, 1993
Summary
High-resolution CT scans reveal varied findings in respiratory bronchiolitis-associated interstitial lung disease (RB-ILD), an inflammatory condition linked to smoking. These abnormalities can range from subtle changes to more pronounced lung damage.
Area of Science:
- Pulmonary Medicine
- Radiology
- Pathology
Background:
- Respiratory bronchiolitis-associated interstitial lung disease (RB-ILD) is an inflammatory lung condition.
- It is closely associated with cigarette smoking and can be mistaken for desquamative interstitial pneumonitis.
- Recent advancements have focused on differentiating these interstitial lung diseases.
Purpose of the Study:
- To describe the high-resolution computed tomography (HRCT) imaging features of RB-ILD.
- To correlate HRCT findings with biopsy-proven cases of RB-ILD.
- To aid in the distinction between RB-ILD and similar interstitial lung diseases.
Main Methods:
- Retrospective review of five biopsy-proven cases of RB-ILD.
- Detailed analysis of high-resolution CT (HRCT) findings in each case.
- Comparison of imaging features to identify common patterns.
Main Results:
- HRCT findings in RB-ILD were variable among the five cases.
- Observed abnormalities included atelectasis, ground-glass opacities, and emphysema.
- Linear and reticular interstitial abnormalities were also noted.
- Some cases showed no detectable abnormality on HRCT.
Conclusions:
- High-resolution CT imaging in RB-ILD presents a spectrum of findings.
- Radiologists should consider RB-ILD in smokers with interstitial lung abnormalities.
- Further research may refine HRCT criteria for diagnosing RB-ILD.
- Distinguishing RB-ILD from desquamative interstitial pneumonitis remains important.