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Author Spotlight: Expanding Interventional Pulmonology Research with Robotic-Assisted Bronchoscopy
Published on: July 19, 2024
Transbronchial Lung Cryobiopsy for Diagnosing Interstitial Lung Disease: A Retrospective Single-Center Experience
Jin Han Park1, Ji Hoon Jang1, Hyun Kuk Kim1
1Division of Pulmonology and Critical Care Medicine, Department of Internal Medicine, Haeundae Paik Hospital, Inje University College of Medicine, Busan, Republic of Korea.
Insights
Transbronchial lung cryobiopsy (TBLC) is a safe and effective method for diagnosing interstitial lung diseases (ILDs) in Korea. This procedure, utilizing flexible bronchoscopy and fluoroscopic guidance, achieved an 85.2% diagnostic yield in multidisciplinary discussions.
Area of Science:
- Pulmonology
- Interventional Pulmonology
- Diagnostic Pathology
Background:
- Accurate diagnosis of interstitial lung diseases (ILDs) is crucial for effective treatment.
- Multidisciplinary discussion (MDD) integrating histopathology is key for ILD diagnosis.
- Transbronchial lung cryobiopsy (TBLC) offers a less invasive alternative to surgical lung biopsy for ILD diagnosis.
Purpose of the Study:
- To evaluate the appropriate methods for performing TBLC in Korean ILD patients.
- To assess the safety and diagnostic yield of TBLC in this population.
Main Methods:
- Retrospective analysis of 27 patients who underwent TBLC for ILD.
- Detailed review of TBLC procedure specifics and subsequent MDD diagnoses.
- Procedures performed under general anesthesia with fluoroscopic guidance and endobronchial balloon blockers.
Main Results:
- TBLC procedures were generally brief (median <30 minutes) with a median of 2 biopsies per patient.
- The most common histopathologic patterns were alternative (48.2%) and indeterminate (33.3%).
- Post-TBLC MDD diagnoses included idiopathic pulmonary fibrosis (33.3%) and smoking-related ILD (25.9%).
Conclusions:
- TBLC, using flexible bronchoscopy and endobronchial balloon blockers under general anesthesia with fluoroscopic guidance, appears safe and adequate for ILD diagnosis in Korea.
- The diagnostic yield of MDD following TBLC was 85.2%.
- Further research is warranted to fully establish the diagnostic yield and confidence of TBLC for ILD.
Background:
An accurate diagnosis in patients with interstitial lung diseases (ILDs) by multidisciplinary discussion (MDD) based on histopathologic information is essential for optimal treatment. Transbronchial lung cryobiopsy (TBLC) has increasingly been used as a diagnostic alternative to surgical lung biopsy. This study aimed to evaluate the appropriate methods of TBLC in patients with ILD in Korea.
Methods:
A total of 27 patients who underwent TBLC were included. TBLC procedure details and clinical MDD diagnosis using TBLC histopathologic information were retrospectively analyzed.
Results:
All procedures were performed under general anesthesia with the fluoroscopic guidance in the operation room using flexible bronchoscopy and endobronchial balloon blocker. The median procedure duration was less than 30 minutes, and the median number of biopsies per participant was 2. Most of the bleeding after TBLC was not severe, and the rate of pneumothorax was 25.9%. The most common histopathologic pattern was alternative (48.2%), followed by indeterminate (33.3%) and usual interstitial pneumonia (UIP)/probable UIP (18.5%). In the MDD after TBLC, the most common diagnosis was idiopathic pulmonary fibrosis (33.3%), followed by smoking-related ILD (25.9%), nonspecific interstitial pneumonia (18.6%), unclassifiable-ILD (14.8%), and others (7.4%).
Conclusion:
This first single-center experience showed that TBLC using a flexible bronchoscopy and endobronchial balloon blocker with the fluoroscopic guidance under general anesthesia may be a safe and adequate diagnostic method for ILD patients in Korea. The diagnostic yield of MDD was 85.2%. Further studies are needed to evaluate the diagnostic yield and confidence of TBLC.
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