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  • Title: Lymphovascular Invasion Increases the Risk of Nodal and Distant Recurrence in Node-Negative Stage I-IIA Non-Small-Cell Lung Cancer.
    Author: Sung SY, Kwak YK, Lee SW, Jo IY, Park JK, Kim KS, Lee KY, Kim YS.
    Journal: Oncology; 2018; 95(3):156-162. PubMed ID: 29847825.
    Abstract:
    OBJECTIVES: Despite complete surgical resection, 30-40% of patients with stage I-IIA non-small-cell lung cancer (NSCLC) have recurrences. We aimed to elucidate the effect of lymphovascular invasion (LVI) on the prognosis and patterns of recurrence in patients with pathologically confirmed T1-2N0 NSCLC. METHODS: We evaluated 381 patients who underwent complete resection and were diagnosed with pathologic T1-2N0 NSCLC between March 2000 and January 2012. Local recurrence, nodal recurrence, and distant metastasis were defined and analyzed. RESULTS: LVI was present in 72 patients (18.9%). The 5-year disease-free survival (DFS) for all patients was 69.9%. Patients with LVI showed a significant decrease in 5-year DFS (47.3 vs. 74.4%, p < 0.001). LVI was a significant prognostic predictor in multivariate analysis (p = 0.003). The patients with LVI showed a significantly increased 5-year cumulative incidence of nodal recurrence (22.5 vs. 8.7%, p < 0.001) and distant metastasis (30.4 vs. 14.9%, p = 0.004). However, no difference was shown between the two groups in the 5-year cumulative incidence of local recurrence (p = 0.416). CONCLUSIONS: LVI is a negative prognostic factor in patients with stage I-IIA NSCLC. The presence of LVI significantly increases the risk of nodal and distant recurrence.
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