宋娟娟, 刘延晴, 林岩松. Clinical analysis of short-term outcome in low-to-intermediate-risk thyroid cancer after low-dose131I therapy[J]. China Oncology, 2019, 29(3): 207-211.
宋娟娟, 刘延晴, 林岩松. Clinical analysis of short-term outcome in low-to-intermediate-risk thyroid cancer after low-dose131I therapy[J]. China Oncology, 2019, 29(3): 207-211. DOI: 10.19401/j.cnki.1007-3639.2019.03.008.
I在中低危分化型甲状腺癌(differentiated thyroid carcinoma,DTC)清甲治疗后短期内不同转归的影响因素。方法:回顾性分析2015年1月—2017年1月166例中低危DTC患者资料,男性50例,女性116例,平均年龄(39.61±10.23)岁。首次清甲剂量为1 110MBq,取得清甲前及清甲后6~12个月刺激性甲状腺球蛋白(stimulated thyroglobulin,sTg)及诊断性全身显像(diagnosticwhole body scan,Dx-WBS),根据结果分为最佳治疗反应(excellent response,ER)组与非最佳反应(non-excellent response,NER)组。采用两样本t检验、Mann-Whitney U秩和检验及χ
2
检验进行组间临床病理资料比较,采用Logistic回归分析影响清甲疗效的因素,采用受试者工作特征(receiver operating characteristic,ROC)曲线确定最佳界值。结果:ER组127例,NER组39例,ER率为76.5%(127/166)。治疗后短期随访ER组清甲治疗前sTg(preablative sTg,ps-Tg)明显低于NER组[1.5(0.04-30.57)ng/mL vs 17.6(0.04-21.52)ng/mL;U=2 479,P0.05],且性别、年龄差异有统计学意义,男性及年龄稍小者更易出现NER。多因素分析显示,ps-Tg水平、肿瘤大小、淋巴结转移数目、性别、年龄及多灶性均为影响清甲疗效的相关因素(OR:0.361~2.875)。ROC曲线分析显示,ps-Tg最佳临界值为2.0 ng/mL。结论:ps-Tg水平较低、病灶较小、淋巴结转移数目较少、男性、年龄较小及单灶患者清甲治疗后短期内更易达到ER;且以ps-Tg值2.0 ng/mL为最佳临界点,对预测治疗后短期临床转归有较高的灵敏度和特异度。
Abstract
Background and purpose: The concept of response-to-therapy assessment system (RTAS) was first proposed in the 2015 American Thyroid Association (ATA) guidelines. This study aimed to investigate the different short-term outcomes of thyroid ablation with low-dose (1 110 MBq)
131
I for low-to-intermediate-risk thyroid cancer based on this system
and its probable influence factors. Methods: A total of 166 patients with differentiated thyroid carcinoma (DTC) [50 males
116 females; average age: (39.61±10.23) years] undergoing first thyroid ablation with 1 100 MBq
131
I from January 2015 to January 2017 were retrospectively observed. All patients underwent diagnostic whole body scan (Dx-WBS)
and the stimulated thyroglobulin (sTg) was measured before ablation and 6-12 months after ablation respectively. According to above results
patients were divided into excellent response (ER) group and non-excellent response (NER) group. Clinical and pathological characteristics of 2 groups were compared using two-sample t test
Mann-Whitney U test and χ
2
test. Logistic regression was used to identify the influence factors for efficacy of
131
I ablation
and the cut-off value was determined by receiver operating characteristic (ROC) curve analysis. Results: There were 127 patients in ER group and 39 patients in NER group. The successful ablation rate was 76.5% (127/166). Patients in ER group showed lower preablative sTg (ps-Tg) compared with patients in NER group. The ps-Tg levels were 1.5 (0.04-30.57) ng/mL and 17.6 (0.04- 21.52) ng/mL respectively (U=2 479
P0.05). Male and patient with younger age were more prevalent in NER group (P0.05). Logistic regression showed that ps-Tg
tumor size
the number of metastatic lymph nodes
gender
age and multifocality were independent predictors for efficacy of
131
I ablation (OR: 0.361-2.875). The optimal cut-off value of ps-Tg identified by ROC curve analysis was 2.0 ng/mL. Conclusion: The pati
ents with lower ps-Tg
smaller diameter of tumor
fewer lymph node metastases
male
younger age and single lesion are more likely to have ER within a short period following thyroid ablation. Ps-Tg of 2.0 ng/mL is identified as cut-off value for predicting the short-term therapeutic response