Table 3 Follow-up ultrasonography and tumor recurrence/persistence in 525 patients who underwent total thyroidectomy for papillary thyroid carcinoma
Number of follow-up US sessions | Interval of the last follow-up US (month: mean ± SD, range) | Tumor recurrence/persistence (%) |
|---|---|---|
1 (n = 58) | 13.9 ± 11.8 (5-58) | 3 (5.2) |
2 (n = 57) | 26.1 ± 14.8 (10-73) | 7 (12.3) |
3 (n = 29) | 40.5 ± 13.3 (19-70) | 1 (3.4) |
4 (n = 64) | 55.3 ± 11.2 (30-81) | 4 (6.3) |
5 (n = 169) | 64.1 ± 9.4 (45-90) | 6 (3.6) |
6 (n = 114) | 71.8 ± 6.7 (55-89) | 6 (5.3) |
7 (n = 28) | 78.0 ± 9.0 (55-91) | 2 (7.1) |
8 (n = 4) | 82.0 ± 0.8 (81-83) | 1 (25) |
9 (n = 2) | 82.5 ± 2.1 (81-84) | 1 (50) |