Zhang Jing,Chen Chang,Yang Yi,et al.Therapy response and prognosis of different doses of 131I for low- and intermediate-risk differentiated thyroid carcinoma[J].Journal of Chongqing Medical University,2023,48(4):444-449.
Zhang Jing,Chen Chang,Yang Yi,et al.Therapy response and prognosis of different doses of 131I for low- and intermediate-risk differentiated thyroid carcinoma[J].Journal of Chongqing Medical University,2023,48(4):444-449. DOI: 10.13406/j.cnki.cyxb.003201.
Therapy response and prognosis of different doses of 131I for low- and intermediate-risk differentiated thyroid carcinoma
To investigate therapy response and progression-free survival(PFS) with different doses of
131
I in postoperative patients with low- and intermediate-risk differentiated thyroid carcinoma(DTC).
Methods
2
A total of 201 DTC patients with a total of 236 person-time
131
I treatments with different doses of
131
I were retrospectively analyzed. Serological and imaging indexes at 6 to 12 months after treatment were determined to evaluate the response of patients. And they were divided into four groups(G1 to G4 group) according to
131
I administered activity(1.1 GBq once,1.1 GBq twice,3.0 GBq,3.7 GBq). The patients were followed up for 12 to 90 months,and their serological, imaging and treatment records were collected after
131
I therapy to assess the progression. Chi-square
test and Fisher’s exact test were performed to compare the differences in efficacy response and influencing factors among the treatment groups. Kaplan-Meier method and log-rank test were used to compare the PFS. Cox proportional risk model was used to evaluate the independent risk factors for PFS.
Results
2
①Total rate of excellent response(ER)/indeterminate response(IDR)/biochemical incomplete response(BIR)/structural incomplete res
ponse(SIR) among 4 groups were 41.5%(98/236),44.9%(106/236),6.8%(16/236) and 6.8%(16/236) respectively. ②The ER rates of G1 to G4 groups were 16.67%(10/60),42.86%(15/35),56.52%(13/23),and 50.85%(60/118);the IDR rates of the four groups were 60.00% (36/60),45.71%(16/35),30.43%(7/23),and 39.83%(47/118);the BIR rates of the four groups were 10.00%(6/60),0.00%(0/35),4.35%(1/23),and 7.63%(9/118);the SIR rates of the four groups were 13.33%(8/60),11.43%(4/35),8.70%(2/23),and 1.69%(2/118) respectively. ③There was statistically significance in the rate of ER between G1 and G2/G3/G4(
P=
0.005;0.000;0.000) and SIR between G1 and G4(
P=
0.003). ④The median follow-up time was 30 months,with progression observed in 18 patients(8.96%). There were no significant differences in PFS among different doses of
131
I(
P=
0.112). Multivariate analysis showed that age and therapy response were independent prognostic factors for PFS.
Conclusion
2
The short-term ablation efficacy of
131
I between multiple low-dose(1.1 GBq twice) group and high-dose(3.0 and 3.7 GBq) groups has no significant difference in postoperative patients with low- and intermediate-risk DTC. Different doses of
131
I are not significantly related to PFS. For patients with ER and aged
<
55 years,there is a PFS benefit.
关键词
Keywords
references
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