Abstract

To comparatively evaluate drug-eluting bead transarterial chemoembolization (DEB-TACE) and conventional transarterial chemoembolization (cTACE) for efficacy, safety, and related prognostic factors in the treatment of colorectal liver metastasis (CRLM). This study retrospectively analyzed 75 patients with CRLM-administered DEB-TACE (n = 36) or cTACE (n = 39) between January 2016 and December 2017. Local control, survival outcome, and complications were compared between the two groups. Univariate and multivariate analyses of prognostic factors affecting progression-free survival (PFS) and overall survival (OS) were performed. The median follow-up in the two groups was 10.5 months (range, 0.5-22). Median PFS and OS in the DEB-TACE group were 10.0 and 13.0 months, respectively, and 6.0 and 8.5 months in the cTACE group, respectively (P = 0.009 and P = 0.008). The 3-, 6-, and 12-month OS rates in the DEB-TACE group were 100.0%, 94.4%, and 55.6%, respectively, and 92.3%, 71.8%, and 35.9% in the cTACE group, respectively. The 3-month OS rate (P = 0.083) showed no significant difference between the two groups, but significant differences were found in the 6- and 12-month OS rates (P = 0.008 and P = 0.030). Univariate and multivariate survival analyses showed that treatment method, tumor size, and tumor number were independent prognostic factors affecting PFS and OS. DEB-TACE has advantages over cTACE in prolonging PFS and OS in patients with CRLM. Treatment method, tumor number, and tumor size are important prognostic factors affecting PFS and OS. However, further multicenter and prospective trials are needed to confirm a deeper comparison between DEB-TACE and cTACE in patients with CRLM.

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