Prognostic value of a novel risk classification of microvascular invasion in patients with hepatocellular carcinoma after resection.
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ABSTRACT: The present research aimed to evaluate the prognostic value of a novel risk classification of microvascular invasion (MVI) in hepatocellular carcinoma (HCC) after resection.A total of 295 consecutive HCC patients underwent hepatectomy were included in our study. We evaluated the degree of MVI according to the following three features: the number of invaded microvessels (?5 vs >5), the number of invading carcinoma cells (? 50 vs >50), the distance of invasion from tumor edge (?1 cm vs >1 cm).All patients were divided into three groups according to the three risk factors of MVI: non-MVI group (n=180), low-MVI group (n=60) and high-MVI group (n=55). The overall survival (OS) and recurrence-free survival (RFS) rates of high-MVI group were significantly poorer than those of low-MVI and non-MVI groups (P<0.001 and P=0.001; P<0.001 and P=0.003). Multivariate analysis showed high-MVI, type of resection, ICG-R15 and tumor size were risk factors for OS after hepatectomy. High-MVI, type of resection and tumor size were risk factors for RFS. In subgroup analyses, the OS and RFS rates of low-MVI and non-MVI groups were better than high-MVI group regardless of tumor size. In high-MVI group, anatomical liver resection (n=28) showed better OS and RFS rates compared with non-anatomical liver resection (n=29) (P=0.012 and P=0.002).The novel risk classification of MVI based on histopathological features is valuable for predicting prognosis of HCC patients after hepatectomy.
SUBMITTER: Zhao H
PROVIDER: S-EPMC5354924 | biostudies-literature | 2017 Jan
REPOSITORIES: biostudies-literature
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