AFP and neoplasm: An analysis of the importance of the eight prognostic factors revealed that the presence of satellite nodules is the most important factor in the ANN model (100%), followed by tumor size (76.0%), GGT level (74.6%), tumor differentiation (70.0%), blood loss (57.4%), HBV-DNA load (55.7%), AFP level (42.0%), and MVI (41.0%; Fig. 2b).