增强MRI多功能直方图参数与三阴乳腺癌PD-L1表达的相关性分析

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Abstract Objective To explore the correlation between dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI) multi-function histogram parameters (Ktrans, Kep, Ve) and the expression of programmed death ligand 1 (PD-L1) in triple-negative breast cancer. Methods A collection of 52 patients with triple-negative breast cancer who were pathologically confirmed in the Tangshan People’s Hospital, Hebei Province from December 2019 to June 2020. Before surgery or before puncture, DCE-MRI was performed to calculate the histogram parameters of the MRI multi-function parameters (Ktrans, Kep, Ve) of the patient’s lesions, and the positive expression of PD-L1 in each lesion was detected by immunohistochemistry. The expression of PD-L1 was detected by two scoring methods: tumor positive cell score (TPS) and immune cell score (IC). According to the expression of PD-L1, they were divided into negative group and positive group, and the significance of each histogram quantitative parameter and the positive expression of PD-L1 in breast cancer was evaluated. Results In the TPS scoring system for triple-negative breast cancer, the positive expression rate of PD-L1 was 21.15%, and in the IC scoring system, the positive expression rate of PD-L1 was 40.38%. In the IC score group, the mean Ktrans, Ktrans P50, and Ktrans P75 values of the PD-L1 positive group were higher than those of the negative group (P ＜ 0.05). The mean Kep, Kep P25, and Kep P50 values of the PD-L1 positive group were higher than those of the negative group (P ＜ 0.05). In the TPS scoring group, the PD-L1 scoring status was compared in various functional parameters of MRI, and the difference was not statistically significant (P ＞ 0.05). Conclusion In the IC score group, PD-L1 positive triple-negative breast cancer patients have higher Ktrans and Kep. Therefore, MRI multifunctional parameters may be an effective imaging index for pre-evaluating whether patients with triple-negative breast cancer can be immunotherapy.

Key words： Triple-negative breast cancer Enhanced magnetic resonance imaging Histogram Programmed cell death ligand-1

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	LI Ji PENG Fei WANG Shuo

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LI Ji PENG Fei WANG Shuo. Correlation between histogram analysis parameters derived from DCE-MRI and the expression of PD-L1 in triple-negative breast cancer#br#[J]. 中国医药导报, 2021, 18(34): 30-34.

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https://www.yiyaodaobao.com.cn/EN/ OR https://www.yiyaodaobao.com.cn/EN/Y2021/V18/I34/30

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