Ultrasound-Guided Percutaneous Microwave Ablation for Solid Benign Thyroid Nodules: Comparison of MWA versus Control Group

Table 3

The changes in volume and diameter before MWA and at each follow-up.

	Baseline	1 month	3 months	6 months	9 months	12 months
Largest diameter (cm)	2.92 ± 0.55	2.27 ± 0.99^c	1.82 ± 0.91^c	1.81 ± 0.59^c	1.58 ± 0.68^c	1.38 ± 0.56^c
Volume (ml)	6.61 ± 4.65	4.03 ± 3.30	2.48 ± 2.27^d	1.94 ± 1.73^d	1.33 ± 1.45^d	0.87 ± 0.99^d
VRR (%)	—	30.53 ± 38.94	55.98 ± 25.59	69.31 ± 22.03	76.65 ± 20.45	84.67 ± 17.37

Variates shown as mean ± standard deviation. ^c, nodule largest diameter was compared with baseline in the MWA group. ^d, nodule volume was compared with baseline volume in the MWA group.