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  • Title: Comparing diagnostic sensitivity of different needle sizes for lymph nodes suspected of lung cancer in endobronchial ultrasound transbronchial needle aspiration: Systematic review and meta-analysis.
    Author: Yu Lee-Mateus A, Garcia-Saucedo JC, Abia-Trujillo D, Labarca G, Patel NM, Pascual JM, Fernandez-Bussy S.
    Journal: Clin Respir J; 2021 Dec; 15(12):1328-1336. PubMed ID: 34402194.
    Abstract:
    BACKGROUND: Endobronchial ultrasound transbronchial needle aspiration (EBUS-TBNA) is a safe and minimally invasive procedure for evaluating hilar and mediastinal lymph nodes. The reported sensitivity and specificity of EBUS-TBNA are 95% and 97%, respectively. A comparison of diagnostic sensitivity for lymph nodes suspected of lung cancer according to needle size in EBUS-TBNA is needed. OBJECTIVES: To compare the diagnostic sensitivity of the 19-G, 21-G, 22-G and 25-G needles for lymph nodes suspected of non-small cell lung cancer (NSCLC) using EBUS-TBNA. METHODS: A literature search from PubMed, EMBASE, LILACS, DOAJ and CENTRAL through October 2020 was performed by two reviewers. The extracted data were evaluated using STATA® and Open Meta Analyst software for meta-analysis with a binary method model to compare sensitivity, specificity and summary receiver operating characteristic curve for each needle size. RESULTS: Fourteen studies including 1296 participants were considered for the analysis. The overall sensitivity of EBUS-TBNA was 88.2% (95% CI 84%, 91%) and 93% (95% CI 88%, 95%) for the 19-G needle, 87.6% (95% CI 79.6%, 92.8%) for the 21-G needle and 85% (95% CI 80%, 88%) for the 22-G needle. The overall sensitivity of EBUS-TBNA for diagnosing NSCLC was 88.3% (95% CI, 81%, 93%) and 92.9% (95% CI, 85%, 97%) for the 19-G needle, 89.4% (95% CI 79.4%, 94.8%) for the 21-G needle and 82.1% (95% CI 66%, 91%) for the 22-G needle. CONCLUSION: The 19-G, 21-G and 22-G needles present a similarly high diagnostic sensitivity in EBUS-TBNA. The 19-G needle provided better sample adequacy for molecular and immunohistochemical testing, improving diagnostic yield in this subgroup.
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