Jingfei Weng,1,2,* Yuyao Xiao,1,* Jing Liu,3,* Xiaohua Liu,4 Yuqing He,2 Fei Wu,1 Xiaoyan Ni,1 Chun Yang1 

1Department of Radiology, Zhongshan Hospital, Fudan University, Shanghai, People’s Republic of China; 2Department of Radiology, The Affiliated Traditional Chinese Medicine Hospital, Southwest Medical University, Luzhou, People’s Republic of China; 3Department of Radiology, Fudan University Shanghai Cancer Center, Shanghai, People’s Republic of China; 4Department of Radiology, The Affiliated Hospital of Xuzhou Medical University, Xuzhou, People’s Republic of China

*These authors contributed equally to this work

Correspondence: Chun Yang; Xiaoyan Ni, Department of Radiology, Zhongshan Hospital, Fudan University, Shanghai, People’s Republic of China, Tel +86 18702135336 ; +86 15201803582, Email dryangchun@hotmail.com; nixiaoyan1103@126.com

Purpose: To study the MRI features (based on LI-RADS) and clinical characteristics of P53-mutated hepatocellular carcinoma (HCC) patients.
Patients and Methods: This study enrolled 344 patients with histopathologically confirmed HCC (P53-mutated group [n = 196], non-P53-mutated group [n = 148]). We retrospectively evaluated the preoperative MRI features, clinical and pathologic features of the lesions and assigned each lesion according to the LI-RADS. MRI findings, clinical features, and pathologic findings were compared using the Student’s t test, χ 2 test, and multivariable regression analysis.
Results: Most HCC patients were categorized as LR-5. On multivariate analysis, the Edmondson–Steiner grade (odds ratio, 2.280; 95% CI: 1.268, 4.101; p = 0.006) and rim enhancement (odds ratio, 2.517; 95% CI: 1.095, 5.784; p = 0.030) were found to be independent variables associated with P53-mutated HCC. In the group of HCC lesions with the largest tumor diameter (LTD) greater than or equal to 10mm and less than or equal to 20mm, enhancing capsule was an independent predictor of P53-mutated HCC (odds ratio, 6.200; 95% CI: 1.116, 34.449; p = 0.037). Among the HCC lesions (20 mm ˂ LTD ≤ 50 mm), corona enhancement (odds ratio, 2.102; 95% CI: 1.022, 4.322; p = 0.043) and nodule-in-nodule architecture (odds ratio, 2.157; 95% CI: 1.033, 4.504; p = 0.041) were found to be independent risk factors for P53 mutation. Among the HCC lesions (50 mm ˂ LTD ≤ 100 mm), diameter (odds ratio, 1.035; 95% CI: 1.001, 1.069; p = 0.044) and AFP ≥ 400 (ng/mL) (odds ratio, 3.336; 95% CI: 1.052, 10.577; p = 0.041) were found to be independent variables associated with P53-mutated HCC.
Conclusion: Poor differentiation and rim enhancement are potential predictive biomarkers for P53-mutated HCC, while HCCs of different diameters have different risk factors for predicting P53 mutations.

Keywords: liver neoplasms, magnetic resonance imaging, P53-mutated