title: Invited commentary.
authors.affiliation: Division of General Thoracic Surgery, Mayo Clinic and Mayo Foundation, 200 First St, SW, Rochester, MN 55905, USA.
authors.forename: Paul H
authors.initials: PH
authors.lastname: Schipper
authors.forename: Francis C
authors.initials: FC
authors.lastname: Nichols
mesh_terms: D005629:Frozen Sections; D006801:Humans; D008168:Lung / Q000473:pathology; D008171:Lung Diseases / Q000175:diagnosis* / Q000473:pathology; D008175:Lung Neoplasms / Q000175:diagnosis* / Q000473:pathology