title: Invited commentary.
authors.affiliation: Department of Thoracic Surgery, University Hospitals Leuven, Herestraat 49, Leuven, 3000, Belgium. Electronic address: laurens.ceulemans@uzleuven.be.
authors.forename: Laurens J
authors.initials: LJ
authors.lastname: Ceulemans
authors.affiliation: Department of Thoracic Surgery, University Hospitals Leuven, Herestraat 49, Leuven, 3000, Belgium.
authors.forename: Paul
authors.initials: P
authors.lastname: De Leyn
mesh_terms: D002289:Carcinoma, Non-Small-Cell Lung / Q000556:secondary*; D005260:Female; D006801:Humans; D008175:Lung Neoplasms / Q000473:pathology*; D008197:Lymph Node Excision / Q000379:methods*; D008198:Lymph Nodes / Q000473:pathology*; D008297:Male; D009367:Neoplasm Staging; D011013:Pneumonectomy