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Transbronchial lung cryobiopsy for the diagnosis of interstitial lung diseases
Claudia Ravaglia1, Venerino Poletti1,2
1Department of Thoracic Diseases, G.B. Morgagni Hospital/University of Bologna, Forlì, Italy.
Insights
Transbronchial lung cryobiopsy offers valuable histological insights for diagnosing fibrotic interstitial lung diseases. This review supports integrating cryobiopsy into diagnostic algorithms for interstitial lung disease.
Area of Science:
- Pulmonology
- Thoracic Surgery
- Pathology
Background:
- Fibrotic interstitial lung diseases (ILDs) require accurate histological diagnosis.
- Multidisciplinary team (MDT) approach is crucial for ILD diagnosis.
- Surgical lung biopsy (SLB) is invasive and carries risks.
Purpose of the Study:
- To review recent literature supporting the integration of transbronchial lung cryobiopsy (TLC) into ILD diagnostic algorithms.
- To evaluate the diagnostic yield and concordance of TLC compared to SLB.
- To assess the impact of TLC on MDT diagnostic confidence and patient management.
Main Methods:
- Systematic review of recent studies on TLC in ILD diagnosis.
- Analysis of histopathological concordance between TLC and SLB.
- Evaluation of diagnostic agreement in MDT discussions post-TLC.
Main Results:
- TLC provides meaningful histological information for ILD diagnosis.
- Good histopathological concordance and MDT diagnostic agreement reported.
- TLC increases diagnostic confidence, potentially influencing management.
- Probable UIP pattern on TLC predicts definite UIP on SLB and is linked to higher mortality.
Conclusions:
- TLC is a valid alternative to SLB for ILD diagnosis in experienced centers.
- Standardized protocols are essential for optimizing risk/diagnostic yield ratio.
- TLC facilitates definitive ILD diagnosis and influences clinical decision-making.
Purpose Of Review:
Transbronchial lung cryobiopsy has shown promise in several studies in providing meaningful histological information in the multidisciplinary team diagnosis of fibrotic interstitial lung diseases. The purpose of this review is to describe recent literature providing support for the formal integration of cryobiopsy into the algorithm for interstitial lung disease diagnosis.
Recent Findings:
Histopathological concordance between cryobiopsy and surgical biopsy and diagnostic agreement at multidisciplinary discussion have been reported good; furthermore, cryobiopsy may provide an increased diagnostic confidence to a level likely to influence management. Finally, although cryobiopsy is more likely to provide a probable usual interstitial pneumonia (UIP) pattern than a definite UIP pattern, given the limited sampling of sub-pleural lung parenchyma in most cases, finding of a probable UIP pattern at cryobiopsy samples is strongly predictive of a definite UIP pattern in the corresponding surgical biopsy and when a UIP pattern is found on cryobiopsy sample, this is associated with higher mortality compared with other histological patterns.
Summary:
Cryobiopsy is becoming a valid alternative to surgical lung biopsy for making histopathological diagnosis in patients with interstitial lung diseases of undetermined type in experienced centres, with standardized protocols, in order to have the best risks/diagnostic yields ratio.
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