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Title
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The yield of endoscopic ultrasound in lung cancer staging : does lymph node size matter?
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Author
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Abstract
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| Introduction: Transoesophageal endoscopic ultrasound with fine-needle aspiration (EUS-FNA) is a minimally invasive procedure to demonstrate unresectability in lung cancer patients with enlarged malignant mediastinal lymph nodes (MLN). We compared the performance of EUS-FNA to show malignant invasion in enlarged versus small MLN. Methods: A single center analysis was performed in lung cancer patients with a suspicion for malignant MLN invasion based on the available imaging. In these patients, EUS-FNA was presumed to impact the diagnostic course since patients underwent surgical-pathologic verification only when EUS-FNA did not demonstrate MLN invasion. Results: We evaluated 100 lung cancer patients in whom MLN invasion was presumed based on the available imaging. In 75 patients (75%), there was at least one enlarged MLN, whereas in 25 patients (25%), only small MLN were found. The sensitivity and negative predictive value to detect malignancy in enlarged MLN was 96% (95% confidence interval [CI], 87-99) and 67% (95% Cl, 29-92), respectively. The sensitivity and negative predictive value of EUS-FNA in small MLN was 93% (95% Cl, 66-99) and 92% (95% Cl, 61-99), respectively. EUS-FNA prevented a surgical (mediastinal) intervention in 88 and 52% of the patients with enlarged or small MLN, respectively (p < 0.001). Conclusions: As the sensitivity to detect malignant MLN invasion is comparably high for both enlarged and small but suspected MLN, clinicians should consider EUS-FNA even in case computed tomography-scan shows no enlarged MLN. The impact of EUS-FNA to avoid surgical mediastinal interventions is greater when enlarged MLN are present. The moderate negative predictive value of EUS-FNA makes surgical-pathologic verification still compulsory, regardless of the size of the MLN. |
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Language
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English
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Source (journal)
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Journal of thoracic oncology / International Association for the Study of Lung Cancer [Aurora, Colo.] - Hagerstown, Md, 2006, currens
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Publication
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Hagerstown, Md
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Lippincott Williams & Wilkins
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2008
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ISSN
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1556-0864
[print]
1556-1380
[online]
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DOI
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10.1097/JTO.0B013E3181653CBB
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Volume/pages
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3
:3
(2008)
, p. 245-249
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ISI
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000254414300007
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Full text (Publisher's DOI)
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