Abstract
Background
Microvascular invasion (MVI) is recognized as a risk factor for early recurrence of hepatocellular carcinoma (HCC) within the Milan criteria after curative treatment.
Methods
One hundred eleven consecutive patients with HCC within the Milan criteria who underwent hepatic resection were retrospectively reviewed. Independent preoperative predictors of MVI were identified, and a scoring system was developed using significant predictors.
Results
MVI was identified in 51 of 111 patients (46%). Multivariate analysis identified the following independent predictors of MVI: alpha-fetoprotein (AFP) of > 95 ng/mL (odds ratio [OR], 9.87; 95% confidence interval [95% CI], 2.24–56.8; P = 0.002), des-γ-carboxy prothrombin (DCP) of > 55 mAU/mL (OR, 5.50; 95% CI, 2.09–15.4; P < 0.001), tumor size of > 2.8 cm (OR, 6.10; 95% CI, 2.07–20.0; P < 0.001), and non-smooth tumor margin in the hepatobiliary phase of gadolinium-ethoxybenzyl-diethylenetriamine pentaacetic acid (Gd-EOB-DTPA)-enhanced magnetic resonance imaging (MRI) (OR, 5.34; 95% CI, 1.84–16.9; P = 0.002). A clinical scoring system was developed using these four variables. Within a total possible score of 0 to 4, the prevalence of MVI with a score of 0, 1, 2, 3, and 4 was 4.5%, 24.0%, 45.5%, 91.7%, and 100%, respectively (P < 0.001). The area under the curve of the scoring system was 0.865 based on the receiver operating characteristic curve analysis of the prediction score.
Conclusions
Our clinical scoring system, consisting of AFP, DCP, tumor size, and tumor margin in Gd-EOB-DTPA-enhanced MRI, can be valuable for predicting MVI in HCC within the Milan criteria before curative treatment.
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Acknowledgements
We thank Angela Morben, DVM, ELS, from Edanz Group (www.edanzediting.com/ac), for editing a draft of this manuscript.
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This research did not receive any specific grant from funding agencies in the public, commercial, or not-for-profit sectors.
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Study conception and design: Ryu, Saitsu, and Okuda.
Acquisition of data: Ryu, Wada, Tateishi, Hara, Yoshitomi, Momosaki, and Yasumori.
Analysis and interpretation of data: Ryu, Takami, Yasumori, Momosaki, Saitsu, and Okuda.
Drafting of manuscript: Ryu.
Critical revision: Takami, Saitsu, and Okuda.
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Ryu, T., Takami, Y., Wada, Y. et al. A Clinical Scoring System for Predicting Microvascular Invasion in Patients with Hepatocellular Carcinoma Within the Milan Criteria. J Gastrointest Surg 23, 779–787 (2019). https://doi.org/10.1007/s11605-019-04134-y
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DOI: https://doi.org/10.1007/s11605-019-04134-y