诊断学理论与实践 ›› 2025, Vol. 24 ›› Issue (02): 178-186.doi: 10.16150/j.1671-2870.2025.02.009
李卓含1,2a, 黄新韵2a, 郭睿2a, 易红梅2b, 许彭鹏2c, 武志芳1, 李彪2a()
收稿日期:
2025-01-06
接受日期:
2025-03-24
出版日期:
2025-04-25
发布日期:
2025-08-19
通讯作者:
李彪 E-mail:lb10363@rjh.com.cn基金资助:
LI Zhuohan1,2a, HUANG Xinyun2a, GUO Rui2a, YI Hongmei2b, XU Pengpeng2c, WU Zhifang1, LI Biao2a()
Received:
2025-01-06
Accepted:
2025-03-24
Published:
2025-04-25
Online:
2025-08-19
摘要:
目的 国际预后指数(the international prognostic index, IPI)对合并滤泡性淋巴瘤成分的弥漫大B细胞淋巴瘤(follicular lymphoma and diffuse large B-cell lymphoma,FL/DLBCL)患者的危险区分效能有限,本研究旨在探索FL/DLBCL与DLBCL在影像学特征中的差异,并将PET/CT基线特征与临床参数融合,以优化IPI评价FL/DLBCL患者预后的效能。 方法 收集2015年1月至2022年1月在本院就诊并经病理证实的65例连续FL/DLBCL患者(随访时间2.4~113.0个月),1∶1匹配一组同期诊断为DLBCL的患者(随访时间2.9~91.6个月),比较2组患者PET/CT特征及生存期的差异。应用Cox回归分析筛选FL/DLBCL患者无进展生存(progression-free survival, PFS)期的独立预后因子,并纳入列线图。结合C指数(concordance index)和受试者操作特征(receiver operating characteristic, ROC)曲线评价模型的预测价值。 结果 相较于DLBCL,FL/DLBCL患者PET/CT图像中的2个病灶之间最大距离(the largest distance between two lesions, Dmax)更大(55.07比33.82,P=0.031),全身病灶数量更多(7个比4个,P=0.002)。IPI只能区分FL/DLBCL低危与非低危2个风险组(P=0.010),但无法识别出进展高风险患者(P=0.743)。将PET/CT图像特征与临床参数融合分析显示,Dmax(HR=3.151,95%CI为1.253~7.922,P=0.015)和IPI(HR=3.285,95%CI为1.208~8.932,P=0.020)是FL/DLBCL患者PFS期的独立预后因素,据此建立列线图,其C指数为0.701,3项全局检验(似然比检验、Wald检验和得分检验)均表现出高度统计学意义(χ²分别为13.27、12.88、15.11, P值分别为0.001、0.002、<0.001)。 结论 FL/DLBCL在PET/CT图像上表现出比DLBCL更播散的特征;同时,Dmax是评估FL/DLBCL患者预后的十分有前景的参数,基于Dmax和IPI构建的列线图在预测FL/DLBCL生存期时表现出很好的区分效能和预测准确性。
中图分类号:
李卓含, 黄新韵, 郭睿, 易红梅, 许彭鹏, 武志芳, 李彪. 滤泡合并弥漫大B细胞淋巴瘤的PET/CT特征及其联合IPI在预后评估中的价值[J]. 诊断学理论与实践, 2025, 24(02): 178-186.
LI Zhuohan, HUANG Xinyun, GUO Rui, YI Hongmei, XU Pengpeng, WU Zhifang, LI Biao. Prognostic value of PET/CT characteristics and combined IPI in follicular lymphoma and diffuse large B-cell lymphoma[J]. Journal of Diagnostics Concepts & Practice, 2025, 24(02): 178-186.
表1
2组患者的基线特征
Item | FL/DLBCL (N=65) | DLBCL (N=65) | P value |
---|---|---|---|
Sex | 0.599 | ||
Male | 33 (50.8%) | 30(46.2%) | |
Female | 32 (49.2%) | 35(53.8%) | |
Cell of Origin | 0.159 | ||
Non-GCBs | 31(47.7%) | 39(60.0%) | |
GCBs | 14(52.3%) | 26(40.0%) | |
longest diameter of the largest node (cm) | 0.303 | ||
≤6 | 47(72.3%) | 52(80.0%) | |
>6 | 18(27.7%) | 13(20.0%) | |
Double-expressor | 0.493 | ||
Negative | 40(66.7%) | 47(72.3%) | |
Positive | 20(33.3%) | 18(27.7%) | |
Bone Marrow Involvement | 0.042 | ||
Negative | 52(80.0%) | 60(92.3%) | |
Positive | 13(20.0%) | 5(7.7%) | |
*Age (years) | 0.380 | ||
≤60 | 37(56.9%) | 32(49.2%) | |
>60 | 28(43.1%) | 33(50.8%) | |
*ECOG performance status | 0.144 | ||
Negative | 56(86.2%) | 61(93.8%) | |
Positive | 9(13.8%) | 4(6.2%) | |
*Ann Arbor Stage | 0.584 | ||
1-2 | 25(38.5%) | 22(33.8%) | |
3-4 | 40(61.5%) | 43(66.2%) | |
*Number of extra-nodal involvement | 0.651 | ||
≤2 | 54(83.1%) | 52(80.0%) | |
>2 | 11(16.9%) | 13(20.0%) | |
*Serum lactate dehydrogenase levels | 0.861 | ||
Normal | 33(50.8%) | 32(49.2%) | |
> 1×ULN | 32(49.2%) | 33(50.8%) | |
*IPI score | 0.336 | ||
0-1 | 27(41.6%) | 30(46.2%) | |
2 | 13(20.0%) | 14(21.5%) | |
3 | 11(16.9%) | 14(21.5%) | |
4-5 | 14(21.5%) | 7(10.8%) |
表2
2组间PET/CT基线参数的差异
Item | FL/DLBCL(Median, IQR) | DLBCL(Median, IQR) | P value |
---|---|---|---|
SUVmax | 21.78(14.87,33.42) | 25.68(16.61,37.05) | 0.458 |
MTVmax(mL) | 83.13(13.80,378.25) | 66.28(25.80,245.75) | 0.891 |
TMTV(mL) | 124.39(25.51,649.42) | 84.01(40.57,365.78) | 0.594 |
TLGmax | 600.87(99.40,2546.89) | 699.47(250.10,2420.73) | 0.653 |
TLG | 771.22(188.77,4527.02) | 881.00(310.94,3735.38) | 0.917 |
Dmax(cm) | 55.07(8.37,69.53) | 33.82(7.60,54.43) | 0.031 |
Dmaxbulk(cm) | 37.48(8.06,52.20) | 27.99(7.60,48.09) | 0.220 |
Number of lesions | 7(3,21) | 4(2,10.5) | 0.002 |
表3
FL/DLBCL患者临床基因学和PET/CT图像参数的生存分析
Item | Univariable | Multivariable | |||
---|---|---|---|---|---|
HR(95% CI) | P value | HR(95% CI) | P value | ||
Sex | 1.871(0.821,4.267) | 0.136 | |||
Age(years) | 1.173(0.533,2.582) | 0.693 | |||
Cell of origin | 1.361(0.611,3.032) | 0.450 | |||
Double-expressor | 0.473(0.158,1.415) | 0.181 | |||
Extranodal involvement | 3.653(1.544,8.641) | 0.003 | |||
Bone marrow involvement | 2.741(1.107,6.784) | 0.029 | |||
Number of nodal sites | 1.874(1.101,3.188) | 0.021 | |||
Longest diameter of the largest node (cm) | 1.655(0.730,3.754) | 0.228 | |||
Ann Arbor stage | 1.502(1.000,2.258) | 0.050 | |||
B symptoms | 1.186(0.463,3.035) | 0.723 | |||
ECOG performance status | 3.868(1.480,10.107) | 0.006 | |||
IPI* | 3.664(1.362,9.860) | 0.010 | 3.285(1.208,8.932) | 0.020 | |
Serum lactate dehydrogenase levels | 5.001(2.042,12.246) | 0.000 | |||
β2-microglobulin | 1.826(0.743,4.486) | 0.189 | |||
Hemoglobin | 0.420(0.124,1.428) | 0.165 | |||
Platelet count | 1.817(0.755,4.374) | 0.183 | |||
SUVmean | 1.977(0.828,4.725) | 0.125 | |||
SUVmax | 1.898(0.820,4.393) | 0.134 | |||
MTVmax | 2.644(1.196,5.846) | 0.016 | |||
TMTV | 2.766(1.217,6.286) | 0.015 | |||
TLGmax | 2.949(1.229,7.079) | 0.015 | |||
TLG | 2.851(1.111,5.997) | 0.027 | |||
Number of lesions | 2.411(0.960,6.057) | 0.061 | |||
Dmax | 3.769(1.512,9.396) | 0.004 | 3.151(1.253,7.922) | 0.015 | |
Dmaxbulk | 2.964(0.881,9.967) | 0.079 | |||
Spreadbulk | 2.370(1.057,5.318) | 0.036 | |||
Spreadpatient | 6.319(0.852,46.834) | 0.071 |
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