• J. Oral Pathol. Med. · Apr 2015

    Tumor budding correlates with occult cervical lymph node metastasis and poor prognosis in clinical early-stage tongue squamous cell carcinoma.

    • Nan Xie, Cheng Wang, Xiqiang Liu, Ruyao Li, Jinsong Hou, Xiaohua Chen, and Hongzhang Huang.
    • Department of Oral Pathology, Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, China; Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, China.
    • J. Oral Pathol. Med. 2015 Apr 1; 44 (4): 266-72.

    BackgroundTumor budding has been suggested to be a prognostic factor in various human cancers. However, the prognostic value of tumor budding for early-stage (cT1/2N0) tongue squamous cell carcinoma remains inconclusive. This study analyzed the correlation of tumor budding with the clinicopathologic features, and its prognostic significance for cT1/2N0 stage tongue squamous cell carcinoma.MethodsOne hundred and ninety-five patients with T1/2 stage tongue squamous cell carcinoma enrolled in the retrospective study. Tumor invasive depth, the intensity of tumor budding, and other clinicopathological features were reviewed. Overall survivals were evaluated by the Kaplan-Meier method. For multivariable analysis, Cox's proportional hazards regression models were performed.ResultsThe frequency of tumor buds in tongue squamous cell carcinoma is about 85.6% in this study. The intensity of tumor budding showed strong correlations with occult lymph node metastasis (P < 0.05), local relapse (P < 0.01), worse invasive pattern (P < 0.01), and invasive depth (P < 0.05). The invasive depth was significantly associated with T classification (P < 0.01) and lymph node metastasis (P < 0.01). And both high intensity of tumor budding and deeper invasive depth correlated with reduced overall survival. Cox's regression models proved tumor budding to be an independent prognostic factor in clinical early-stage tongue squamous cell carcinoma. Tumor local relapses were also a predictor of tongue squamous cell carcinoma progression.ConclusionsTumor budding is a frequent event in tongue squamous cell carcinoma. It independently predicted prognosis of patients with T1/2 stage tongue squamous cell carcinoma and may be used for routing pathological diagnosis and the decision of elective lymph node dissection.© 2014 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd.

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