Fig. 5

ROC curves of formate, tumor size, and AFP in diagnosing vascular invasion in HCC. Formate has shown an AUROC of 0.612 in the investigation group and an AUROC of 0.727 in the validation group in terms of predicting VI. Tumor size and AFP levels, on the other hand, have AUROC of 0.730 and 0.714 in the investigation group, and 0.591 and 0.591 in the validation group, respectively, for predicting VI