title: Invited commentary.
authors.affiliation: Division of Thoracic Surgery, The Johns Hopkins Medical Institutions, 600 N Wolfe St, Blalock 240, Baltimore, MD 21287, USA. syang@jhmi.edu
authors.forename: Stephen C
authors.initials: SC
authors.lastname: Yang
mesh_terms: D044963:Biopsy, Fine-Needle / Q000379:methods*; D001980:Bronchi; D019160:Endosonography / Q000379:methods*; D006801:Humans; D008175:Lung Neoplasms / Q000000981:diagnostic imaging / Q000473:pathology*; D008207:Lymphatic Metastasis / Q000000981:diagnostic imaging / Q000473:pathology; D008481:Mediastinoscopy / Q000379:methods*; D009367:Neoplasm Staging / Q000379:methods; D015203:Reproducibility of Results