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  • Title: Does pathological response after transarterial chemoembolization for hepatocellular carcinoma in cirrhotic patients with cirrhosis predict outcome after liver resection or transplantation?
    Author: Allard MA, Sebagh M, Ruiz A, Guettier C, Paule B, Vibert E, Cunha AS, Cherqui D, Samuel D, Bismuth H, Castaing D, Adam R.
    Journal: J Hepatol; 2015 Jul; 63(1):83-92. PubMed ID: 25646884.
    Abstract:
    BACKGROUND & AIMS: To investigate the prognostic significance of pathologic response (PR) after transarterial chemoembolization (TACE) in cirrhotic patients resected or transplanted for hepatocellular carcinoma (HCC), and to identify predictors of complete pathologic response (CPR). METHODS: Between 1990 and 2010, 373 consecutive cirrhotic patients with HCC were treated by TACE followed by either liver resection (LR:184 patients) or liver transplantation (LT:189 patients). The PR was evaluated as the mean percentage of non-viable tumor area within each tumor. CPR was defined as the absence of any viable tumor area in all the present nodules. RESULTS: A total of 59 (32%) and 37 (20%) patients had CPR after LR and LT, respectively. Five-year overall survival (OS) was higher in patients with CPR compared to those without, after LR (58% vs. 34%; p=0.0006) and tends to be higher after LT (84% vs. 65%; p=0.09). The 5-year recurrence-free survival (RFS) rates were significantly higher in both groups (24% vs. 13% after LR; p=0.008 and 94% vs. 73% after LT, p=0.007). A cut-off value of >90% necrosis emerged as an impacting factor on patient survival after LR or LT. On multivariate analysis stratified on the type of procedure (LR or LT), PR >90% remained an independent factor of better OS and RFS. Independent factors associated with CPR were: a maximal tumor size <30 mm (RR 2.17 [1.27-3.74]), a single tumor (RR 6.08 [3.29-12.07]), and an preoperative AFP<100 ng/ml (see results section) (RR 3.99 [1.63-11.98]). The probability to achieve a CPR ranged from 2% in the absence of any factors to 48% in the presence of all factors. CONCLUSION: In cirrhotic patients with HCC, a complete or nearly complete PR improves long-term survival after LR and LT independently of other pathological factors. This underlines the importance of neoadjuvant treatment to obtain a significant decrease of active tumor load.
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