In these malignant tumors, low expression levels could be observed in 9/31 papillary, 2/10 follicular, 4/12 medullary and 2/6 poorly-differentiated thyroid carcinomas (17/63; 37.0%), whereas strong PSMA expression of the neovasculature was noted in nine papillary, two follicular, four poorly-differentiated and four anaplastic carcinomas (19/63; 30.2%) (Table 1 and Figure 2). This evidence concerns the gene FOLH1 and undifferentiated carcinoma.