title: Margin and local recurrence after sublobar resection of non-small cell lung cancer.
abstract: BACKGROUND
  Local recurrence is a major concern after sublobar resection (SR) of non-small cell lung cancer (NSCLC). We postulate that a large proportion of local recurrence is related to inadequate resection margins. This report analyzes local recurrence after SR of stage I NSCLC. Stratification based on distance of the tumor (<1 cm vs >or=1 cm) to the staple line was performed.
  
  
  METHODS
  We reviewed 81 NSCLC patients (44 female) who underwent operation over an 89-month period (January 1997 to June 2004). Mean forced expiratory volume in one second percentiles (FEV1) was 57%. Mean age was 70 (46-86) years. There were 55 wedge and 26 segmental resections. There were 41 tumors with a margin <1 cm and 40 with a margin >or=1 cm. Local recurrence was defined as recurrence within the ipsilateral lung or pulmonary hilum.
  
  
  RESULTS
  There were no perioperative deaths. Mean follow-up was 20 months. Margin distance significantly impacted local recurrence; 6 of 41 patients (14.6%) developed local recurrence in the group with margin less than 1 cm versus 3 of 40 patients (7.5%) in the group with margin equal to or more than 1 cm (P = .04). Of the 41 patients with margins <1 cm, segmentectomy was used in 7 (17%), whereas in the 40 patients with the >or=1 cm margins, segmentectomy was used in 19 (47.5%).
  
  
  CONCLUSIONS
  Margin is an important consideration after SR of NSCLC. Wedge resection is frequently associated with margins less than 1 cm and a high risk for locoregional recurrence. Segmentectomy appears to be a better choice of SR when this is chosen as therapy.
authors.affiliation: Division of Thoracic Surgery and Foregut Surgery, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA.
authors.forename: Amgad
authors.initials: A
authors.lastname: El-Sherif
authors.forename: Hiran C
authors.initials: HC
authors.lastname: Fernando
authors.forename: Ricardo
authors.initials: R
authors.lastname: Santos
authors.forename: Brian
authors.initials: B
authors.lastname: Pettiford
authors.forename: James D
authors.initials: JD
authors.lastname: Luketich
authors.forename: John M
authors.initials: JM
authors.lastname: Close
authors.forename: Rodney J
authors.initials: RJ
authors.lastname: Landreneau
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D002289:Carcinoma, Non-Small-Cell Lung / Q000000981:diagnostic imaging / Q000473:pathology* / Q000503:physiopathology / Q000601:surgery*; D005260:Female; D005500:Follow-Up Studies; D005541:Forced Expiratory Volume; D006801:Humans; D008175:Lung Neoplasms / Q000000981:diagnostic imaging / Q000473:pathology* / Q000503:physiopathology / Q000601:surgery*; D008297:Male; D008875:Middle Aged; D009364:Neoplasm Recurrence, Local / Q000517:prevention & control; D009367:Neoplasm Staging; D013902:Radiography, Thoracic; D012189:Retrospective Studies; D016019:Survival Analysis; D013997:Time Factors; D014057:Tomography, X-Ray Computed; D016896:Treatment Outcome