Background And Objective: Lymphatic microvessels may play an important role in tumor metastasis. This study detected lymphatic microvessel density (LVD) in supraglottic laryngeal carcinoma to find its correlation to clinicopathologic characteristics, and to assess its prognostic significance in supraglottic laryngeal carcinoma.
Methods: Clinical data of 51 supraglottic laryngeal carcinoma patients who underwent primary lesion resection were reviewed. Immunohistochemical staining was performed with podoplanin monoclonal antibody to recognize lymphatic microvessels. The correlations of LVD to clinicopathologic characteristics and prognosis were analyzed.
Results: The mean LVD was 3.25+/-2.37, with a median of 3, in the 51 specimens of supraglottic laryngeal carcinoma. LVD was significantly higher in the patients with cervical lymph node metastasis than in those without (P=0.009). The overall 5-year survival rate was 54.9%. The 5-year survival rate was significantly lower in the patients with poorly differentiated tumor, stages T3-4 disease, lymph node metastasis, stages III-IV disease and high LVD than in their counterparts. Cox regression analysis revealed that LVD, T classification, and differentiation were independent factors for survival.
Conclusion: LVD is related to lymph nodes status, and is an independent factor for prognosis of supraglottic laryngeal carcinoma.
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