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.
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