title: Validation of EBUS-TBNA-integrated nodal staging in potentially node-positive non-small cell lung cancer.
abstract: OBJECTIVE
  Nodal staging of lung cancer is important for selecting surgical candidates. Endobronchial ultrasound-guided transbronchial needle aspiration (EBUS-TBNA) was evaluated as a modality for nodal staging of patients with potentially node-positive non-small cell lung cancer (NSCLC).
  
  
  METHODS
  Endobronchial ultrasound-guided transbronchial needle aspiration was used for nodal staging of NSCLC patients with radiological N2/3 disease (short axis >10 mm on computed tomography and/or standardized positron emission uptake value >2.5 on 2-deoxy-2[F-18] fluoro-D-glucose positron emission tomography), T-stage ≥ T2, or positive serum carcinoembryonic antigen. Data on eligible patients were extracted from the database of our institution and analyzed for differences in nodal stages between radiological staging (RS) and EBUS-TBNA-integrated staging (ES), with validation by pathological staging of patients who had undergone surgery.
  
  
  RESULTS
  Of 480 eligible patients, there were 135 N0/1 and 345 N2/3 patients according to RS. Out of the 345 patients staged as N2/3 by RS, 113 (33 %) were downgraded to N0/1 by ES. Out of the 135 patients staged as N0/1 by RS, 12 (9 %) were upgraded to N2/3 by ES. Patients were restaged as N0/1 in 236 cases and N2/3 in 244 cases by ES, and the distributions of nodal stage between RS and ES were significantly different (p < 0.001). Finally, 215 out of the 236 ES-N0/1 patients underwent lung resection, and 195 (90.7 %) and 20 patients were staged by pathology as N0/1 and N2, respectively.
  
  
  CONCLUSIONS
  Endobronchial ultrasound-guided transbronchial needle aspiration is more accurate for lymph node staging compared to radiological staging. EBUS-TBNA can identify patients who are true candidates for surgery.
authors.affiliation: Department of General Thoracic Surgery, Chiba University Graduate School of Medicine, 1-8-1, Inohana, Chiba 260-8670, Japan. y_sakairi1@chiba-u.jp
authors.forename: Yuichi
authors.initials: Y
authors.lastname: Sakairi
authors.forename: Hidehisa
authors.initials: H
authors.lastname: Hoshino
authors.forename: Taiki
authors.initials: T
authors.lastname: Fujiwara
authors.forename: Takahiro
authors.initials: T
authors.lastname: Nakajima
authors.forename: Kazuhiro
authors.initials: K
authors.lastname: Yasufuku
authors.forename: Shigetoshi
authors.initials: S
authors.lastname: Yoshida
authors.forename: Ichiro
authors.initials: I
authors.lastname: Yoshino
mesh_terms: D000368:Aged; D044963:Biopsy, Fine-Needle; D001980:Bronchi; D002289:Carcinoma, Non-Small-Cell Lung / Q000175:diagnosis / Q000000981:diagnostic imaging / Q000473:pathology*; D019160:Endosonography; D005260:Female; D006801:Humans; D008175:Lung Neoplasms / Q000175:diagnosis / Q000000981:diagnostic imaging / Q000473:pathology*; D008198:Lymph Nodes / Q000000981:diagnostic imaging / Q000473:pathology*; D008207:Lymphatic Metastasis; D008297:Male; D009367:Neoplasm Staging; D049268:Positron-Emission Tomography; D014057:Tomography, X-Ray Computed