Journal of Liver Cancer

Articles in E-pub version are posted online ahead of regular printed publication.

Original Articles

Inter-reader Agreement for CT/MRI LI-RADS Category M Imaging Features: A Systematic Review and Meta-analysis: Dong Hwan Kim, Sang Hyun Choi; Received March 11, 2024 Accepted April 5, 2024 Published online April 15, 2024; DOI: https://doi.org/10.17998/jlc.2024.04.05 [Accepted]

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Abstract PDF: Backgrounds/Aims
To systematically evaluate inter-reader agreement in the assessment of individual Liver Imaging Reporting and Data System (LI-RADS) category M (LR-M) imaging features in computed tomography/magnetic resonance imaging (CT/MRI) LI-RADS v2018, and to explore the causes of poor agreement in LR-M assignment.
Methods
Original studies reporting inter-reader agreement for LR-M features on multiphasic CT or MRI were identified using the MEDLINE, EMBASE, and Cochrane databases. The pooled kappa coefficient (κ) was calculated using the DerSimonian–Laird random-effects model. Heterogeneity was assessed using Cochran’s Q test and I² statistics. Subgroup meta-regression analyses were conducted to explore the study heterogeneity.
Results
In total, 24 eligible studies with 5,163 hepatic observations were included. The pooled κ values were 0.72 (95% confidence interval, 0.65–0.78) for rim arterial phase hyperenhancement, 0.52 (0.39–0.65) for peripheral washout, 0.60 (0.50–0.70) for delayed central enhancement, 0.68 (0.57–0.78) for targetoid restriction, 0.74 (0.65–0.83) for targetoid transitional phase/hepatobiliary phase appearance, 0.64 (0.49–0.78) for infiltrative appearance, 0.49 (0.30–0.68) for marked diffusion restriction, and 0.61 (0.48–0.73) for necrosis or severe ischemia. Substantial study heterogeneity was observed for all LR-M features (Cochran's Q test: p < 0.01; I² ≥ 89.2%). Studies with a mean observation size of <3 cm, those performed using 1.5-T MRI, and those with multiple image readers, were significantly associated with poor agreement of LR-M features.
Conclusions
The agreement for peripheral washout and marked diffusion restriction was limited. The LI-RADS should focus on improving the agreement of LR-M features.

Outcomes of Liver Resection and Transarterial Chemoembolization in Patients with Multinodular BCLC-A Hepatocellular Carcinoma: Jiwon Yang, Won-Mook Choi, Danbi Lee, Ju Hyun Shim, Kang Mo Kim, Young-Suk Lim, Han Chu Lee, Deok-Bog Moon, Dong-Hwan Jung, Jonggi Choi; Received March 3, 2024 Accepted March 25, 2024 Published online April 3, 2024; DOI: https://doi.org/10.17998/jlc.2024.03.25 [Accepted]

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Abstract PDF: Background
This study aimed to compare the outcomes of liver resection (LR) and transarterial chemoembolization (TACE) in patients with multinodular hepatocellular carcinoma (HCC) within the Milan criteria who were not eligible for liver transplantation.
Methods
We retrospectively analyzed 483 patients with multinodular HCC within the Milan criteria, who underwent either LR or TACE as an initial therapy between 2013 and 2022. The overall survival (OS) in the entire population and recurrence-free survival (RFS) in patients who underwent LR and TACE and achieved a complete response were analyzed. Propensity score (PS) matching analysis was also used for a fair comparison of outcomes between the two groups.
Results
Among the 483 patients, 107 (22.2%) and 376 (77.8%) underwent LR and TACE, respectively. The median size of the largest tumor was 2.0 cm, and 72.3% of the patients had two HCC lesions. The median OS and RFS were significantly longer in the LR group than in the TACE group (p <0.01 for both). In the multivariate analysis, TACE (adjusted hazard ratio [aHR], 1.81 and aHR, 2.41) and large tumor size (aHR, 1.43 and aHR, 1.44) were significantly associated with worse OS and RFS, respectively. The PS-matched analysis also demonstrated that the LR group had significantly longer OS and RFS than the TACE group (PS <0.05).
Conclusion
In this study, LR showed better OS and RFS than TACE in patients with multinodular Barcelona Clinic Liver Cancer stage A HCC. Therefore, LR can be considered an effective treatment option for these patients.

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