Extracellular volume fraction measurement correlates with lymphocyte abundance in thymic epithelial tumors

Cancer Imaging

Yi-Cheng Hsiung¹  Chia-Ying Lin¹  Ming-Tsung Chuang¹  Chang-Yao Chu²  Chao-Chun Chang³  Yi-Ting Yen³  Yau-Lin Tseng³ 

[1] Department of Medical Imaging, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University;Department of Pathology, National Cheng Kung University Hospital;Division of Thoracic Surgery, Department of Surgery, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University;

关键词: Extracellular space;    Magnetic resonance imaging;    Thymic epithelial tumor (TET);    World Health Organization (WHO);   

DOI  :  10.1186/s40644-020-00349-4

来源: DOAJ

【 摘 要 】

Abstract Background Recent advance in tissue characterization with parametric mapping imaging has the potential to be a novel biomarker for histopathologic correlation with thymic epithelial tumors (TETs). The purpose of our study is to evaluate MRI T1 mapping with the calculation of extracellular volume (ECV) fraction for histologic correlation with thymic epithelial tumor based on lymphocyte abundance. Methods A retrospective study including 31 consecutive patients (14 men and 17 women, median age, 56 years; interquartile range, 12 years) with TETs was performed. The T1 values and ECV were assessed by using quantitative MRI mapping techniques. Mann-Whitney U test, Kruskal-Wallis H test, and receiver operating characteristic curve analyses were used to assess discrimination between different types of TETs based on lymphocyte abundance. Results Extracellular volume was significantly higher in TETs with sparse lymphocyte, including type A, type B3, and thymic carcinoma, compared with those with abundant lymphocyte, including type B1, B2, and AB thymomas (42.5% vs 26.9%, respectively; p < 0.001). Extracellular volume was significantly higher in thymic carcinoma compared with low grade and high grade thymomas (48.6% vs 31.1% vs 27.6%, respectively; p = 0.002). Conclusions T1 mapping with the calculation of extracellular volume (ECV) fraction correlate with the WHO histologic classification of thymic epithelial tumor based on lymphocyte abundance.

【 授权许可】

Unknown