Related Experiment Video
Updated: Jun 3, 2026
04:44
Imaging Features of Systemic Sclerosis-Associated Interstitial Lung Disease
Published on: June 16, 2020
Smoking-related interstitial lung diseases
A Caminati1, P Graziano, N Sverzellati
1U.O. Pneumologia e Terapia Semi-Intensiva Respiratoria, Servizio di Fisiopatologia Respiratoria ed Emodinamica Polmonare, Ospedale San Giuseppe - Fatebenefratelli Milano, Italy.
Pathologica
|March 25, 2011
Summary
Recognizing smoking-related lung diseases, like respiratory bronchiolitis-interstitial lung disease, is challenging for pathologists. These conditions may represent a spectrum of smoking-induced interstitial lung disease patterns in susceptible individuals.
Area of Science:
- Pulmonary Pathology
- Interventional Pulmonology
- Thoracic Surgery
Background:
- Cigarette smoking causes diverse morphological changes in lung tissue, posing diagnostic challenges for pathologists, especially in surgical and transbronchial biopsies.
- Respiratory bronchiolitis (RB) is a common finding in smokers, and when it's the sole cause of symptomatic interstitial lung disease (ILD), it's termed respiratory bronchiolitis-interstitial lung disease (RB-ILD).
- Smoking is linked to several histologic patterns of ILD, including RB, RB-ILD, desquamative interstitial pneumonia (DIP), and pulmonary Langerhans cell histiocytosis (PLCH), suggesting a spectrum of smoking-related ILD.
Purpose of the Study:
- To highlight the diagnostic challenges in identifying smoking-related lung pathologies.
- To emphasize the concept of smoking-related interstitial lung disease (SR-ILD) as a spectrum of conditions.
- To discuss the importance of evaluating histologic features for accurate diagnosis and differentiation of these smoking-related entities.
Main Methods:
- Review of histopathologic findings in surgical and transbronchial lung biopsies from smokers.
- Analysis of clinical, radiologic, and pathologic features of various smoking-related interstitial lung diseases.
- Consideration of recent findings on respiratory bronchiolitis-interstitial lung disease with fibrosis.
Main Results:
- Smoking-related lung diseases present a spectrum of histologic patterns, challenging pathologists in their recognition.
- Despite distinct classifications, RB, RB-ILD, DIP, and PLCH share features, suggesting they are part of a continuum of smoking-induced ILD in predisposed smokers.
- Distinguishing these entities, even with biopsies, can be difficult, and a newly described fibrotic RB-ILD variant may be distinct from fibrotic nonspecific interstitial pneumonia.
Conclusions:
- Pathologists face challenges in diagnosing smoking-related lung diseases due to overlapping features.
- A unifying concept of smoking-related interstitial lung disease spectrum is proposed, encompassing RB, RB-ILD, DIP, and PLCH.
- Accurate histopathologic evaluation is crucial for differentiating these conditions, with ongoing research into specific variants like fibrotic RB-ILD.
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