TP53 and thyroid cancer: The p53-positive results of the IHC staining varied from 0 to 74% in the DTC group (48.3% for the whole DTC group), from 16 to 93% in the PDTC group (57.4% for the whole PDTC group), and from 53 to 100% in the ATC group (64.8% for the whole ATC group) vs. from 0 to 22% among healthy controls (9.8% among all thyroid cancer-free controls).