Efficacy and Safety of Radiofrequency Ablation for Treatment of Locally Recurrent Thyroid Cancers Smaller than 2 cm
Efficacy and Safety of Radiofrequency Ablation for Treatment of Locally Recurrent Thyroid Cancers Smaller than 2 cm
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DOI:
10.1148/radiol.15140079
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发表时间:
2015-09-01
期刊:
影响因子:
19.7
通讯作者:
Cho, Bo Youn
中科院分区:
文献类型:
--
作者:
Kim, Ji-hoon;Yoo, Won Sang;Cho, Bo Youn
Purpose: To evaluate the efficacy and safety of radiofrequency ablation (RFA) for localized small recurrent thyroid cancers less than 2 cm by comparing them with those at repeat surgery.Materials and Methods: This retrospective study was institutional review board-approved, and informed consent was waived. From December 2008 to December 2011, this study evaluated 73 patients (17 men and 56 women; age, 50.3 years +/- 13.6) with recurrent thyroid cancer who had been treated with RFA (n = 27) or repeat surgery (n = 46) who met the following criteria: (a) three or fewer recurrences or lesions with high probability of recurrence at ultrasonography; (b) no tumor other than the target tumors; and (c) at least 1 year of follow-up. RFA was recommended and performed in cases of surgical ineligibility, such as patient refusal and poor medical condition. Recurrence-free survival rates and posttreatment complication rates (eg, hoarseness and hypocalcemia) were compared between RFA and reoperation groups after adjustment with weighted analysis by using inverse probability of treatment weights.Results: After this adjustment, the 1- and 3-year recurrence-free survival rates were comparable (P = .681) for RFA (96.0% and 92.6%, respectively) and reoperation (92.2% and 92.2%, respectively) groups. The posttreatment hoarseness rate did not differ between the RFA (7.3% [1.8 of 24]) and reoperation (9.0% [3.6 of 39.5]) groups (P = .812), and posttreatment hypocalcemia occurred exclusively in the reoperation group (11.6% [4.6 of 39.5]) but not in the RFA group (0% [0 of 24]) (P = .083).Conclusion: RFA may be an effective and safe alternative to repeat surgery in patients with locally recurrent small thyroid cancers. (C) RSNA, 2015