• Radiology · Oct 2012

    Comparative Study

    Lack of response after initial chemoembolization for hepatocellular carcinoma: does it predict failure of subsequent treatment?

    • Christos Georgiades, Jean-François Geschwind, Neil Harrison, Andrew Hines-Peralta, Eleni Liapi, Kelvin Hong, Zhenke Wu, Ihab Kamel, and Constantine Frangakis.
    • Department of Vascular & Interventional Radiology, Johns Hopkins University School of Medicine, 600 N Wolfe St, Blalock 544, Baltimore, MD 21287, USA. g_christos@hotmail.com
    • Radiology. 2012 Oct 1; 265 (1): 115-23.

    PurposeTo (a) evaluate the response of hepatocellular carcinoma (HCC) to chemoembolization after initial nonresponse, as determined with European Association for the Study of the Liver (EASL) criteria and modified Response Evaluation Criteria in Solid Tumors (mRECIST), and (b) compare posttreatment survival of initial nonresponders versus that of initial responders.Materials And MethodsThe institutional review board approved this retrospective study, which was compliant with HIPAA. A total of 116 consecutive patients (96 men, 20 women; mean age, 63 years) with unresectable HCC who underwent at least two chemoembolization procedures were included. The chemoembolization mixture consisted of 100 mg of cisplatin, 50 mg of doxorubicin, and 10 mg of mitomycin C mixed 1:1 with iodized oil. Tumor response at magnetic resonance imaging was evaluated after each chemoembolization procedure according to EASL criteria and mRECIST. The survival rate in each subgroup was calculated and correlated with response. The Wilcoxon test was used to test group comparability. Kaplan-Meier estimators were used to generate survival curves and compared by using the log-rank test.ResultsNo response to initial chemoembolization was seen in 43% and 50% of patients according to EASL criteria and mRECIST, respectively. After a second chemoembolization procedure, 44% (EASL) and 47% (mRECIST) of initial nonresponders showed a significant response. With EASL criteria, the 1-, 2-, and 3-year survival rates (±standard error of the mean) after two chemoembolization procedures were 39%±10, 14%±7, and 0%, respectively, for nonresponders and 68%±10, 50%±11, and 37%±11 for responders (P=.036, P=.006, and P<.005 at 1, 2, and 3 years). With mRECIST, the 1-, 2-, and 3-year survival rates after two chemoembolization procedures were 49%±9, 20%±8, and 7%±6 for nonresponders and 67%±9, 44%±10, and 36%±9 for responders (P=.174, P=.046, and P=.011 at 1, 2, and 3 years).ConclusionPatients who underwent chemoembolization for HCC showed a response (with both EASL criteria and mRECIST) and improved survival after the second chemoembolization treatment. At least two chemoembolization procedures should be performed in the same targeted lesions before further treatment is abandoned.© RSNA, 2012.

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