Table 3 The complications and the side effects in the RFA and MWA groups in the peri-ablation and follow-up periods.

From: US-Guided Percutaneous Radiofrequency versus Microwave Ablation for Benign Thyroid Nodules: A Prospective Multicenter Study

Complications or side effects RFA group No. (%) MWA group No. (%) P value
Major complications 31 (4.78) 40 (6.63) p = 0.156
    Voice change 29 (4.47) 35 (5.80)  
    Nodule rupture with/without infection 2 (0.31) 4 (0.66)
    Sympathetic nerve injury 0 (0) 1 (0.17)
Minor complications 13 (2.00) 15 (2.49) p = 0.562
    Hemorrhage/hematoma 13 (2.00) 12 (1.99)  
    Vomiting 0 1 (0.17)
    Skin burn 0 1 (0.17)
    Hyperthyroidism 0 1 (0.17)
Side effects 32 (4.93) 28 (4.64) p = 0.812
    Pain with oral analgesics 20 (3.08) 17 (2.82)  
    Coughing 0 1 (0.17)
    Mild fever (37–38.1) 12 (1.85) 10 (1.66)
  1. RFA: radiofrequency ablation, MWA: microwave ablation.