A correlative study of Ki67 and vascular endothelial growth factor and their value in laryngeal squamous cell carcinoma

Objective: To study the correlation between Ki67 and vascular endothelial growth factor(VEGF) and the significance of their expression in laryngeal squamous cell carcinoma(LSCC). Methods: The expressions of Ki67 and VEGF in 40 cases of LSCC and 5 cases of normal laryngeal mucosa were examined by immunohistochemical staining. Results: The expression levels of Ki67 and VEGF in LSCC tissue were higher than in normal laryngeal mucosa (Ki67: P<0.001, VEGF: P<0.001). The two indexes’ levels in patients of different age or different sex had no significant difference (P>0.05). They were higher in LSCC with metastasis of lymph nodes than in patients without metastasis (Ki67: P=0.034, VEGF: P=0.006). The expressions of the two genes elevated correspondingly along with the development of LSCC T stage (P<0.05). In addition, correlation analysis indicated that the expression of Ki67 had a positive correlation with VEGF in LSCC(r=0.823, P<0.01). Conclusion: Ki67 and VEGF are objective indexes for the biological behavior of LSCC, and they might be helpful to the diagnosis, treatment and prognosis of laryngocarcinoma.