Objective To analyse epidermal growth factor receptor(EGFR) gene mutations in pathologically confirmed lung adenocarcinoma(LAC) samples obtained by endobronchial ultrasound-guided transbronchial needle aspiration(EBUS-TBNA). Methods Clinical data of 964 consecutive patients who underwent EBUS-TBNA in Department of Thoracic Surgery, Fudan University Shanghai Cancer Center from April 2009 to September 2013 were retrospectively reviewed. EGFR gene mutations in 77 LAC patients who were comfirmed by cell morphol...