TPO and thyroid cancer: Finally, 51.9% (27/52) and 46.0% (79/171) of patients with thyroid cancers in Belarus who had surgery after the accident showed intrathyroidal lymphocyte infiltration and positive anti-TPO antibodies, respectively, vs 22 9% (22/96) and 23.3% (24/103) in naturally occurring thyroid cancers in Italy and France [30].