Table 1 Clinical and pathological characteristics of patients at the baseline

No. of patients

55

Age (years)

50.00 (44.00–57.00)

Tumor size (cm)

1.73 (0.40–6.10)

Microcarcinoma

25

45.45

Microscopic extrathyroidal extension

Yes

32

58.18

No

23

41.82

T stage

T1

29

52.73

T2

22

40.00

T3

2

7.27

N stage

N0

21

38.18

N1a

22

20.00

N1b

12

21.82

AJCC TNM

I

32

58.18

II

23

41.82

Ablation RAI dose

None

22

38.18

30 mCi

18

32.73

100 mCi

20

36.36

150 mCi

17

30.91