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Kaplan–Meier analysis for OS. (A) OS for HBV-related HCC patients with PVTT with or without adjuvant aspirin (40 patients vs. 40 patients) after surgery (P = 0.078); (B) OS for patients with HBV-related HCC and type I and II PVTT with or without adjuvant aspirin (25 patients vs. 27 patients) after surgery (P = 0.033); (C) OS for patients with HBV-related HCC and type III and IV PVTT with or without adjuvant aspirin (15 patients vs. 13 patients) after surgery (P = 0.286).
