Endoscopic ultrasound-guided fine needle aspiration and endobronchial ultrasound-guided transbronchial needle aspiration: Are two better than one in mediastinal staging of non-small cell lung cancer?

Abstract

The role of combined endobronchial ultrasound-guided transbronchial needle aspiration (EBUS-TBNA) and endoscopic ultrasound-guided fine needle aspiration (EUS-FNA) with a single bronchoscope is poorly understood. The purpose of the present study was to elucidate the roles of EBUS-TBNA and EUS-FNA with a single bronchoscope in the preoperative hilar and mediastinal staging of non-small cell lung cancer (NSCLC). A total of 150 patients with potentially resectable known or suspected NSCLC were enrolled in our prospective study. EBUS-TBNA was performed, followed by EUS-FNA, with an EBUS bronchoscope for N2 and N3 nodes≥5 mm in the shortest diameter on ultrasound images, in a single session. EBUS-TBNA was performed for 257 lymph nodes and EUS-FNA for 176 lymph nodes. Of the 150 patients, 146 had a final diagnosis of NSCLC. Of these 146 patients, 33 (23%) had N2 and/or N3 nodal metastases. The sensitivity of EBUS-TBNA, EUS-FNA, and the combined approach per patient was 52%, 45%, and 73%, respectively (EBUS-TBNA vs the combined approach, P=.016, McNemar's test). The corresponding negative predictive value was 88%, 86%, and 93%. Two patients (1%) developed severe cough from EBUS-TBNA. The combined endoscopic approach with EBUS-TBNA and EUS-FNA is a safe and accurate method for preoperative hilar and mediastinal staging of NSCLC, with better results than with each technique by itself.