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Two hundred seventeen patients with HCC who had PV and/or IVC tumor thrombus were reviewed and analyzed by Kaplan-Meier and Cox regression analysis. One hundred three patients with HCC who received local limited EBRT (in addition to other treatment modalities) were classified as the EBRT group. The total radiation dose was 36-60 Gy (median, 50 Gy) and was focused on the tumor thrombi. One hundred fourteen patients with HCC who did not receive EBRT were selected from hospitalized patients with HCC who had PV and/or IVC thrombi; these were classified as the non-EBRT group, and their intrahepatic tumors were treated with transarterial chemoembolization or resection, on the basis of the patients’ status. Parameters observed included survival rates and the tumor thrombus response to EBRT as seen on CT scan or MRI.
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