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  • Title: Lymphatic vessel invasion is an independent prognostic factor in patients with a primary resected tumor with esophageal squamous cell carcinoma.
    Author: Brücher BL, Stein HJ, Werner M, Siewert JR.
    Journal: Cancer; 2001 Oct 15; 92(8):2228-33. PubMed ID: 11596042.
    Abstract:
    BACKGROUND: Little data exist about the prognostic role of a lymphatic vessel invasion (LVI) in patients with esophageal carcinoma. The objective of this study was to clarify the presence and prognostic impact of LVI in a large group of patients resected for esophageal squamous cell carcinoma (SCC) at one surgical center. METHODS: Three hundred sixty-six patients, who had a primary resection for SCC, were analyzed by univariate and multivariate analysis. Follow-up was complete for 93.7% patients with a median follow-up of 8.3 years. RESULTS: The total rate of LVI was 39.1% (n = 143). Univariate analysis revealed a significant relation between LVI and different T classifications (P = 0.001), N classifications (P < 0.0001), M classifications (P < 0.0001), International Union Against Cancer (UICC) stages (P < 0.0001), and residual tumor (P < 0.0001). Multivariate analysis of the patients with R0-resected tumors proved LVI as an independent prognostic factor. The 2-, 5- and 10-year survival rates in patients with LVI were 28.5%, 11.1%, and 9.2% compared with 63.4%, 46.6%, and 27%, respectively, without LVI (P < 0.0001). Patients with LVI had a median survival time of 11.4 months compared with 28.6 months without LVI (P < 0.0001). Patients with R0-resected tumors without LVI had a median survival time of 54.1 months compared with 12.1 months in patients with LVI (P < 0.0001) and compared with 11.3 months in patients with R1-resected tumors P < 0.0001). CONCLUSIONS: These data clearly show that LVI is an independent prognostic factor in patients with SCC and confirm the importance of a systematic pathohistologic workup. The prognosis of patients with R0-resected tumors with LVI is equal to patients with an incomplete tumor resection. This supports the inclusion of LVI in the UICC classification system for esophageal carcinoma.
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