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OA12 - Profiling the Multidisciplinary Management of Stage III NSCLC (ID 144)
- Event: WCLC 2019
- Type: Oral Session
- Track: Treatment of Locoregional Disease - NSCLC
- Presentations: 1
- Now Available
OA12.07 - Radicality of Lymphadenectomy in Lung Cancer According to Surgical Approach. Results from the Spanish Group of Video-Assisted Thoracic Surgery (Now Available) (ID 1062)
15:45 - 17:15 | Author(s): Silvana Crowley
The minor standard of systematic nodal dissection (SND) in lung cancer surgery, which is the minimum recommended by the Union for International Cancer Control, requires the resection/sampling of, at least, 3 mediastinal (including subcarinal station) and 3 hilar/intrapulmonary lymph nodes (LN). The objective of this study is to analyze differences in intraoperative LN assessment in patients with surgically treated non-small cell lung cancer (NSCLC) according to surgical approach (open vs VATS), from the results of the Spanish Group of Video-Assisted Thoracic Surgery (GEVATS) database.Method
Prospective multicenter cohort study of anatomic pulmonary resections (n=3533) performed from 20/12/16 to 20/03/18. Exclusions criteria were: indications different from NSCLC, previous lung cancer, synchronous tumors and induction therapy. Patients who did not meet the criteria for SND but had no nodal involvement were coded as pathologic (p)Nx (instead of pN0). Corresponding tests for homogeneity were performed. Multiple logistic regression analysis was used to determine the odds ratio (OR) and 95% confidence interval (95%CI). Stata/SE vs 13 statistical package was used for data analysis. Significance was considered when p<0.05.Result
2532 patients were analyzed (1801 men [71.1%]; median age: 67 years). SND was performed in 65%, with a median of LN resected/sampled of 7 (IQR 4-12) and a rate of pN2 of 9.5%. Table1 summarizes results from bivariate analysis.Independent risk factors for thoracotomy at multivariate analysis (OR; 95%CI) were: squamous cell carcinoma vs adenocarcinoma (1.3; 1.04-1.68), staging mediastinoscopy (2.8; 1.83-4.22), LN resected (1.02; 1.00-1.04), SND (1.4; 1.07-1.8), tumour >3cm (1.8; 1.5-2.2), central tumour (2.5; 2.0-3.1); pN1 (1.5; 1.1-2.1) and pN2 (1.6; 1.1-2.3). A significantly higher proportion of nodal upstaging was observed in thoracotomy group: from cN0 to pN1/pN2, and from cN1 to pN2 (table1).
The intensity of lymphadenectomy in GEVATS was superior in the thoracotomy approach. Therefore, intraoperative lymph node evaluation performed at VATS should improve to have better prognostic information and indicate adjuvant therapy.
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