The results of this study showed that tumor volume in the PTBE group was significantly larger than that in the non-PTBE group (p = 0.035) but not statistically correlated with the severity of PTBE (p = 0.619) and the staining intensity of VEGF (p = 0.978), while the value of EI was significantly different in the different grades of staining intensity of VEGF (p = 0.001). The gene discussed is VEGFA; the disease is neoplasm.