Table 1 The enrolled patients and clinical characteristics of BTNs pre-procedure for the RFA and MWA group.

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

Characteristics RFA group MWA group P value
No. of patients/BTNs 649/687 603/664
Gender (M/F) (n) 140/509 135/468 0.733
Age (years) 47.9 ± 13.6(12–87) 47.1 ± 12.9(12–79) 0.295
Pts. with uni-/multi-nodules (n) 607/42 552/51 0.196
Maximal diameter (cm) 2.91 ± 0.71(2–6.1) 2.92 ± 0.93(2–6.3) 0.819
Volume (ml) 7.22 ± 6.76(0.71–52.56) 7.72 ± 9.16(0.38–70.16) 0.270
Vascular score 2.22 ± 0.84(1–4) 2.31 ± 0.83(1–4) 0.081
Symptomatic score 0.44 ± 1.03(0–4) 0.47 ± 1.10(0–4) 0.602
Cosmetic score 2.27 ± 1.02(1–4) 2.33 ± 0.90(1–4) 0.231
Follow-up (months) 13.5 ± 6.3(3–24) 13.9 ± 6.0(3–24) 0.179
  1. Values are presented as the mean ± SD (range). BTNs: benign thyroid nodules, RFA: radiofrequency ablation, MWA: microwave ablation, M/F: male/female, Pts.: patients, cm: centimeter, ml: milliliter.