Abstract
Background and Aims
Endoscopic ultrasound-guided fine-needle aspiration (EUS-FNA) is increasingly being used for diagnosing lymphadenopathy. We aim to systematically review the accuracy of EUS-FNA in differentiating benign and malignant mediastinal and abdominal lymph nodes (LNs).
Methods
A comprehensive literature search was performed on multiple electronic databases through February 2020. A random or fixed effect model generated the pooled sensitivity, specificity, likelihood ratio (LR), and diagnostic odds ratio (DOR) of EUS-FNA. Subgroup analyses and meta-regression were used to explore sources of heterogeneity.
Results
Twenty-six studies involving 2753 patients with 2833 LNs were included. In the differential diagnosis of benign and malignant LNs, EUS-FNA had a pooled sensitivity, specificity, positive LR, and negative LR of 87% (95% confidence interval [CI] 86–90%), 100% (95% CI 99–100%), 68.98 (95% CI 42.10–113.02), and 0.14 (95% CI 0.11–0.17), respectively. The pooled rate of adverse events associated with EUS-FNA was 1.57% (95% CI 1.06–2.24%). The summary receiver operating characteristic (SROC) yielded an area under the curve (AUC) of 0.9912. EUS-FNA performed in mediastinal LNs gained a sensitivity of 85% (95% CI 81–88%), while in abdominal LNs, it reached 87% (95% CI 82–91%). The sensitivity of the subgroup with rapid on-site evaluation (ROSE) was 91% (95% CI 89–93%), while non-ROSE was 85% (95% CI 82–87%).
Conclusions
EUS-FNA is a sensitive, highly specific, and safe method for distinguishing benign and malignant mediastinal or abdominal LNs. However, the sensitivity of EUS-FNA still varies significantly among different centers.
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Funding
This study was funded by the Science and Technology Plan Grant (No. M201504) from the Esophageal Cancer Research Institute of Guangdong Province, China, and the Group Assistance Plan in Tibet of the National Natural Science Foundation of China (No. XZ2019ZR-ZY60(Z)).
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The study protocol was prospectively registered in PROSPERO (http://www.crd.york.ac.uk/PROSPERO; registration number: CRD42020171901).
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Chen, L., Li, Y., Gao, X. et al. High Diagnostic Accuracy and Safety of Endoscopic Ultrasound-Guided Fine-Needle Aspiration in Malignant Lymph Nodes: A Systematic Review and Meta-Analysis. Dig Dis Sci 66, 2763–2775 (2021). https://doi.org/10.1007/s10620-020-06554-2
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DOI: https://doi.org/10.1007/s10620-020-06554-2