ARRS 2022 Abstracts

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E1071. Not So Dirty Lung: Imaging Spectrum and Pitfalls of Interstitial Lung Abnormalities (ILA)
Authors
  1. Anitha Kini; The Ottawa Hospital
  2. Elena Pena; The Ottawa Hospital
  3. Carole Dennie; The Ottawa Hospital
  4. Carolina Souza; The Ottawa Hospital
Background
Interstitial lung abnormalities (ILA) is defined as parenchymal findings incidentally detected on CT of the lung that may represent an interstitial lung disease (ILD) in patients with otherwise no clinical suspicion of ILD. ILA is commonly seen on CT of the lung in older patients, particularly smokers.

Educational Goals / Teaching Points
This exhibit aims to recognize the importance of ILA diagnosis; describe CT findings of ILA and features of fibrotic and non-fibrotic ILA; differentiate ILA from pitfalls and potential mimickers; and describe proposed management of ILA according to most current guidelines.

Key Anatomic/Physiologic Issues and Imaging Findings/Techniques
This educational exhibit reviews the CT findings of ILA and its main subtypes and discuss current management algorithm, emphasizing the key role of the radiologist in the detection, diagnosis, and management of ILA.

Conclusion
The importance of ILA detection is increasingly recognized, particularly the relevance of the subpleural fibrotic subtype, which is more likely to be associated with radiology progression and increased mortality.