Within individual benign group/normal thyrocytes and non-PTC lesions/tumors, CD56 expression showed consistently strong diffuse expression with no difference between different subgroups, including hyperplasia, thyroiditis (Figure 7, Figure 8), adenomas (Figure 9, Figure 10) and non PTC carcinomas (Figure 11, Figure 12). This evidence concerns the gene NCAM1 and thyroiditis.