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Depts of 1 Pneumology and Critical Care Medicine, and 4 Thoracic Surgery, Thoraxklinik at the University of Heidelberg, Heidelberg, Germany. 2 Interventional Pulmonology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA. Depts of 3 Surgical Gastroenterology, and 5 Cardiothoracic Surgery, Gentofte University Hospital, Copenhagen, Denmark.
CORRESPONDENCE: F. J. F. Herth, Dept of Internal Medicine, Pneumology and Critical Care Medicine, Thoraxklinik Heidelberg, Amalienstr. 5, D-69126 Heidelberg, Germany. Fax: 49 62213961202. E-mail: Felix.Herth{at}thoraxklinik-heidelberg.de
Keywords: Endobronchial ultrasound, lung cancer, mediastinal lymphadenopathy, transbronchial needle aspiration
Received: October 26, 2005
Accepted June 8, 2006
Endobronchial ultrasound-guided transbronchial needle aspiration (EBUS-TBNA) can sample enlarged mediastinal lymph nodes in patients with nonsmall cell lung cancer (NSCLC). To date, EBUS-TBNA has only been used to sample nodes visible on computed tomography (CT). The aim of the present study was to determine the accuracy of EBUS-TBNA in sampling nodes
NSCLC patients with CT scans showing no enlarged lymph nodes (no node >1 cm) in the mediastinum underwent EBUS-TBNA. Identifiable lymph nodes at locations 2r, 2l, 4r, 4l, 7, 10r, 10l, 11r and 11l were aspirated. All patients underwent subsequent surgical staging. Diagnoses based on aspiration results were compared with those based on surgical results.
In 100 patients (mean age 58.9 yrs; 68 males), 119 lymph nodes ranging 5–10 mm in size were detected and sampled. Malignancy was detected in 19 patients but missed in two; all diagnoses were confirmed by surgical findings. The mean diameter of the punctured lymph nodes was 8.1 mm. The sensitivity of EBUS-TBNA for detecting malignancy was 92.3%, specificity was 100%, and the negative predictive value was 96.3%. No complications occurred.
In conclusion, endobronchial ultrasound-guided transbronchial needle aspiration can accurately sample even small mediastinal nodes, therefore avoiding unnecessary surgical exploration in one out of six patients who have no computed tomography evidence of mediastinal disease. Potentially operable patients with no signs of mediastinal involvement on computed tomography may benefit from pre-surgical endobronchial ultrasound-guided transbronchial needle aspiration and staging.
1 cm in diameter.
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