There was no significant difference in the serum VEGF levels or Ktrans values or tumor diameters between the MWA group and the combination group at 1 d after ablation (P = 0.123, P = 0.731 and P = 0.867), and the values were lower in both groups than in the control group (all P < 0.001), which may be attributed to the fact that the main effect at this time was the reduction in tumor volume. Here, VEGFA is linked to neoplasm.