Journal List > J Korean Soc Radiol > v.79(5) > 1107293

Jang, Cho, Kim, Gil, Kim, and Lee: Tumor Recurrence in Hepatocellular Carcinoma Patients after Radiofrequency Ablation: Portal Hypertension as an Indicator of Recurrence of Hepatocellular Carcinoma

Abstract

Purpose:

To evaluate the effect of portal hypertension on the tumor recurrence in patients with hepatocellular carcinoma (HCC) and without hepatic decompression following radiofrequency ablation (RFA).

Materials and Methods:

Treatment-naïve HCC patients within the Milan criteria and with Child-Pugh class A were included in this study, who had performed RFA in our hospital between January 2010 and March 2017. Univariate and multivariate analyses using the Cox proportional hazard model were performed to find the predictors of local or distant tumor recurrence.

Results:

Overall, 178 patients were included in this study. Median follow-up period was 40.2 months. The difference in the local tumor progression rates depending on the absence or presence of portal hypertension was not statistically significant (p = 0.195). The 1-, 3-, and 5-year distant intrahepatic tumor spread rates were 6.6%, 29.5%, and 537% in patients without portal hypertension, and 23.4%, 51.9%, and 63.6% in patients with portal hypertension, respectively. The difference was statistically significant (p = 0.011). Univariate and multivariate analysis showed that portal hypertension was an independent predictor for distant intrahepatic tumor spread (p = 0.008).

Conclusion:

For HCC patients with Child-Pugh class A, portal hypertension adversely affected distant intrahepatic tumor progression.

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Fig. 1
The difference in the recurrence rates depending on the presence of clinically relevant portal hypertension after radiofrequency ablation of hepatocellular carcinoma. A. Local tumor progression rates were similar between the two curves (p = 0.195). B, C. Distant intrahepatic tumor recurrence rates (B), and overall tumor progression rates were statistically higher in patients with clinically relevant portal hypertension (C) (p = 0.011 and p = 0.003, respectively). Note that the curves for distant intrahepatic recurrence and overall tumor progression were nearly identical. HTN = hypertension, RFA = radiofrequency ablation
jksr-79-264f1.tif
Table 1.
The Baseline Characteristics of Patients. Group 1 and Group 2 Denote thoses Patients without and with Portal Hypertension, and there are 82 and 96 Patients in Each Group, Respectively
  Group 1 (n = 82, %) Group 2 (n = 96, %) p-Value
Age, > 65 years 56 (68.2) 59 (61.4) 0.342
Sex, male 79 (96.3) 92 (95.8) 0.862
Hepatitis C infection 17 (20.7) 21 (21.8) 0.853
Alcoholics 21 (25.6) 24 (25.0) 0.926
Spleen size, >10 cm 36 (43.9) 76 (79.1) 0.000∗
Thrombocytopenia 3 (3.6) 45 (46.8) 0.000∗
Child-Pugh score 6 3 (3.6) 30 (31.2) 0.000∗
Multinodular HCC 10 (12.1) 8 (8.3) 0.394
Presence of tumor, > 3 cm 7 (8.5) 14 (14.5) 0.213
Presence of a dome nodule 19 (23.1) 21 (21.8) 0.836
Presence of subcapsular tumor 43 (52.4) 44 (45.8) 0.380
Tumor adjacent to large vessel 23 (28.0) 28 (29.1) 0.869
Combined TACE and RFA 11 (13.4) 18 (18.7) 0.337
Intraoperative RFA 11 (13.4) 11 (11.4) 0.693

∗Statistically significant.

HCC = hepatocellular carcinoma, RFA = radiofrequency ablation, TACE = transarterial chemoembolization

Table 2.
Univariate Analysis of Prognostic Factors for Recurrence-Free Survival
Prognostic Factors Hazard Ratios Standard Errors p-Value
Age, > 65 years 1.273 (0.798–2.031) 0.238 0.310
Sex, male 1.053 (0.331–3.346) 0.590 0.930
Hepatitis C viral infection 1.064 (0.634–1.786) 0.264 0.814
Alcoholics 1.592 (0.995–2.548) 0.240 0.053
Portal hypertension 1.791 (1.133–2.833) 0.234 0.013∗
Child-Pugh score 6 1.774 (1.056–2.981) 0.265 0.030∗
Multinodular HCC 2.445 (1.340–4.461) 0.307 0.004∗
Presence of tumor, > 3 cm 0.990 (0.475–2.064) 0.375 0.979
Presence of a dome nodule 1.189 (0.714–1.980) 0.260 0.505
Presence of a subcapsular tumor 1.462 (0.934–2.287) 0.228 0.096
Tumor adjacent to large vessel 1.036 (0.637–1.684) 0.248 0.887
Combined TACE and RFA 0.789 (0.425–1.464) 0.316 0.452
Operative RFA 1.172 (0.582–2.359) 0.357 0.657

∗Statistically significant.

HCC = hepatocellular carcinoma, RFA = radiofrequency ablation, TACE = transarterial chemoembolization

Table 3.
Multivariate Analysis of Prognostic Factors for the Recurrence-Free Survival
Prognostic Factors Hazard Ratios Standard Errors p-Value
Portal hypertension 1.870 (1.180–2.961) 0.235 0.008∗
Presence of multiple HCC nodules 2.616 (1.431–4.783) 0.308 0.002∗

∗Statistically significant.

HCC = hepatocellular carcinoma

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