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Fig. 4 | BMC Cancer

Fig. 4

From: Tumor necrosis as a poor prognostic predictor on postoperative survival of patients with solitary small hepatocellular carcinoma

Fig. 4

The proposed prognostic model successfully stratified risk for survival prediction of patients with sHCC (log-rank test). Using this model, these sHCC patients were stratified into four groups: risk 1, n = 89; risk 2, n = 132; risk 3, n = 90; risk 4, n = 24. a The RFS curves of the three groups were significantly different (P < 0.0001). b The OS curves of the three groups were significantly different (P < 0.0001)

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