Gerard A Silvestri1, Benjamin T Bevill2, Jing Huang3, Mary Brooks2, Yoonha Choi3, Giulia Kennedy3, Lori Lofaro3, Alex Chen4, M Patricia Rivera5, Nichole T Tanner6, Anil Vachani7, Lonny Yarmus8, Nicholas J Pastis2. 1. Thoracic Oncology Research Group, Division of Pulmonary, Critical Care, and Sleep Medicine, Medical University of South Carolina, Charleston, SC. Electronic address: silvestri@musc.edu. 2. Thoracic Oncology Research Group, Division of Pulmonary, Critical Care, and Sleep Medicine, Medical University of South Carolina, Charleston, SC. 3. Veracyte, Inc., San Francisco, CA. 4. Washington University of St. Louis, St. Louis, MO. 5. University of North Carolina at Chapel Hill, Chapel Hill, NC. 6. Thoracic Oncology Research Group, Division of Pulmonary, Critical Care, and Sleep Medicine, Medical University of South Carolina, Charleston, SC; Ralph H. Johnson Veteran Affairs Hospital, Charleston, SC. 7. University of Pennsylvania, Philadelphia, PA. 8. Johns Hopkins University, Baltimore, MD.
Abstract
BACKGROUND: Bronchoscopy is commonly used to evaluate suspicious lung lesions. The yield is likely dependent on patient, radiographic, and bronchoscopic factors. Few studies have assessed these factors simultaneously while also including the preprocedure physician-assessed probability of cancer (pCA) when assessing yield. METHODS: This study is a secondary data analysis from a prospective multicenter trial. Diagnostic yield of standard bronchoscopy with biopsy ± fluoroscopy, endobronchial ultrasound with transbronchial needle aspiration (EBUS-TBNA), electromagnetic navigation, and combination bronchoscopies was assessed. Definitions for diagnostic and nondiagnostic bronchoscopies were rigorously predefined. The association of diagnostic yield with individual variables was examined by using univariate and multivariate logistic regression analyses where appropriate. RESULTS: A total of 687 patients were included from 28 sites. Overall diagnostic yield was 69%; 80% for EBUS, 55% for bronchoscopy with biopsy ± fluoroscopy, 57% for electromagnetic navigation, and 74% for combination procedures (P < .001). Patients with larger, central lesions with adenopathy were significantly more likely to undergo a diagnostic bronchoscopy. Patients with pCA < 10% and 10% to 60% had lower yields (44% and 42%, respectively), whereas pCA > 60% yielded a positive result in 77% (P < .001). In multivariate logistic regression, the use of EBUS-TBNA, larger sized lesions, and central location were significantly associated with a diagnostic bronchoscopy. Seventeen percent of those with a malignant diagnosis and 28% of those with a benign diagnosis required secondary procedures to establish a diagnosis. CONCLUSIONS: This study is the first to assess the yield of bronchoscopy according to physician-assessed pCA in a large, prospective multicenter trial. The yield of bronchoscopy varied greatly according to physician suspicion that cancer is present, the patients' clinical/radiographic features, and the type of procedure performed. Of the procedures performed, EBUS-TBNA was the most likely to provide a diagnosis.
BACKGROUND: Bronchoscopy is commonly used to evaluate suspicious lung lesions. The yield is likely dependent on patient, radiographic, and bronchoscopic factors. Few studies have assessed these factors simultaneously while also including the preprocedure physician-assessed probability of cancer (pCA) when assessing yield. METHODS: This study is a secondary data analysis from a prospective multicenter trial. Diagnostic yield of standard bronchoscopy with biopsy ± fluoroscopy, endobronchial ultrasound with transbronchial needle aspiration (EBUS-TBNA), electromagnetic navigation, and combination bronchoscopies was assessed. Definitions for diagnostic and nondiagnostic bronchoscopies were rigorously predefined. The association of diagnostic yield with individual variables was examined by using univariate and multivariate logistic regression analyses where appropriate. RESULTS: A total of 687 patients were included from 28 sites. Overall diagnostic yield was 69%; 80% for EBUS, 55% for bronchoscopy with biopsy ± fluoroscopy, 57% for electromagnetic navigation, and 74% for combination procedures (P < .001). Patients with larger, central lesions with adenopathy were significantly more likely to undergo a diagnostic bronchoscopy. Patients with pCA < 10% and 10% to 60% had lower yields (44% and 42%, respectively), whereas pCA > 60% yielded a positive result in 77% (P < .001). In multivariate logistic regression, the use of EBUS-TBNA, larger sized lesions, and central location were significantly associated with a diagnostic bronchoscopy. Seventeen percent of those with a malignant diagnosis and 28% of those with a benign diagnosis required secondary procedures to establish a diagnosis. CONCLUSIONS: This study is the first to assess the yield of bronchoscopy according to physician-assessed pCA in a large, prospective multicenter trial. The yield of bronchoscopy varied greatly according to physician suspicion that cancer is present, the patients' clinical/radiographic features, and the type of procedure performed. Of the procedures performed, EBUS-TBNA was the most likely to provide a diagnosis.
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