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Tumor markers for early diagnosis for brain metastasis of hepatocellular carcinoma: A case series and literature review for effective loco-regional treatment.

ABSTRACT: Intrahepatic lesions of hepatocellular carcinoma (HCC) have been controlled by significant advances in treatment using loco-regional therapies, including, surgery, ablative therapy, catheter-based chemotherapy, and embolization. Consequently, the number of patients with extrahepatic metastatic lesions has increased. Their prognosis remains poor with approximately <1 y of survival from the time of diagnosis. A molecularly targeted drug, sorafenib, have been used to treat extrahepatic lesions and shown the prolonged survival time. However, the therapeutic benefit for the brain metastasis remains unclear, since it causes intratumor bleeding leading to the severe brain damage. No guidelines for the brain metastasis of HCC have been developed to date due to the shortage of the experiences and evidences. Therefore, the development of standard therapy for brain metastasis following the early diagnosis is essential by accumulating the information of clinical courses and evidences. For this purpose, we reviewed cases of HCC brain metastasis reported to date and analyzed additional 8 cases from our hospital, reviewing 592 advanced HCC cases to estimate the possible metastatic lesions in the brain. With careful review of cases and literature, we suggest that the cases with lung metastasis with increase tendency of tumor markers within recent 3-6 months have higher risks of brain metastasis. Therefore, they should be carefully followed by imaging modalities. In addition, the loco-regional treatment, including surgical resection and radiation therapy should be performed for better prognosis by preventing re-bleeding from the tumors.

SUBMITTER: Kamimura K

PROVIDER: S-EPMC5362986 | biostudies-literature |

REPOSITORIES: biostudies-literature

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Project description:BackgroundThe European Association for the Study of the Liver (EASL) criteria and the modified Response Evaluation Criteria in Solid Tumors (mRECIST) are currently adopted to evaluate radiological response in patients affected by HCC and treated with loco-regional procedures. Several studies explored the validity of these measurements in predicting survival but definitive data are still lacking.AimTo conduct a systematic review of studies exploring mRECIST and EASL criteria usefulness in predictive radiological response in HCC undergoing loco-regional therapies and their validity in predicting survival.MethodsA comprehensive search of the literature was performed in electronic databases EMBASE, MEDLINE, COCHRANE LIBRARY, ASCO conferences and EASL conferences up to June 10, 2014. Our overall search strategy included terms for HCC, mRECIST, and EASL. Loco-regional procedures included transarterial embolization (TAE), transarterial chemoembolization (TACE) and cryoablation. Inter-method agreement between EASL and mRECIST was assessed using the k coefficient. For each criteria, overall survival was described in responders vs. non-responders patients, considering all target lesions response.ResultsAmong 18 initially found publications, 7 reports including 1357 patients were considered eligible. All studies were published as full-text articles. Proportion of responders according to mRECIST and EASL criteria was 62.4% and 61.3%, respectively. In the pooled population, 1286 agreements were observed between the two methods (kappa statistics 0.928, 95% confidence interval 0.912-0.944). HR for overall survival (responders versus non responders) according to mRECIST and EASL was 0.39 (95% confidence interval 0.26-0.61, p<0.0001) and 0.38 (95% confidence interval 0.24-0.61, p<0.0001), respectively.ConclusionIn this literature-based meta-analysis, mRECIST and EASL criteria showed very good concordance in HCC patients undergoing loco-regional treatments. Objective response according to both criteria confirms a strong prognostic value in terms of overall survival. This prognostic value appears to be very similar between the two criteria.

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Tumor markers for early diagnosis for brain metastasis of hepatocellular carcinoma: A case series and literature review for effective loco-regional treatment.

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