PCA3 and neoplasm: The mean ± SD of PCAs (PCA1 + PCA2 + PCA3 + PCA4) of the four typical tumor microfeatures were calculated and shown in Figure 8C, indicated that the mean PACs of tumor structural features successively distributed in the range of ±2, and shifted from positive value to negative value with the deterioration of tumor lesions, and stage c displaying tumor microvascularization dilation has the inflection point of PCAs shifting.