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  • Title: Nodules less than 20 mm and vascular invasion are predictors of survival in small hepatocellular carcinoma.
    Author: Kikuchi LO, Paranaguá-Vezozzo DC, Chagas AL, Mello ES, Alves VA, Farias AQ, Pietrobon R, Carrilho FJ.
    Journal: J Clin Gastroenterol; 2009 Feb; 43(2):191-5. PubMed ID: 19142170.
    Abstract:
    BACKGROUND: The aims of this study were to analyze the overall survival of patients with cirrhosis and small hepatocellular carcinoma (HCC) and identify independent pretreatment predictors of survival in Brazil. METHODS: Between 1998 and 2003, 74 patients with cirrhosis and small HCC were evaluated. Predictors of survival were identified using the Kaplan-Meier survival curves and the Cox model. RESULTS: The overall survival rates were 80%, 41%, and 17% at 12, 36, and 60 months, respectively. The mean length of follow-up after HCC diagnosis was 23 months (median 22 mo, range: 1 to 86 mo) for the entire group. Univariate analysis showed that model for endstage liver disease (MELD) score (P=0.016), Child-Pugh classification (P=0.007), alpha-fetoprotein level (P=0.006), number of nodules (P=0.041), tumor diameter (P=0.009), and vascular invasion (P<0.0001) were significant predictors of survival. Cox regression analysis identified vascular invasion (relative risk=14.60, confidence interval 95%=3.3-64.56, P<0.001) and tumor size >20 mm (relative risk=2.14, confidence interval 95%=1.07-4.2, P=0.030) as independent predictors of decreased survival. Treatment of HCC was related to increased overall survival. CONCLUSIONS: Identification of HCC smaller than 20 mm is associated with longer survival. Presence of vascular invasion, even in small tumors, maybe associated with poor prognosis. Treatment of small tumors of up to 20 mm diameter is related to increased survival.
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