 To investigate the characteristics of RET/PTC and H47PTEN rearrangement and the association between gene rearrangement and clinicopathological properties of thyroid carcinoma.     ///    H4-PTEN rearrangement can occur simultaneously with RET/PTC rearrangement in PTC.     ///    "In 3 cases, both RET/PTC and H4-PTEN were identified simultaneously. "    ///    "Rearrangement of RET/PTC-1, RET/PTC-2, RET/PTC-3, ELKS-RET and H4-PTEN (H4/PTEN and PTEN/H4) was analyzed in 139 thyroid tumor tissues by using RT-PCR and sequencing. "    ///    High frequency of lateral neck lymph node involvement was detected in RET/PTC positive PTC (P < 0.01).     ///    "Twelve RET/PTC-1, 6 RET/PTC-3, 6 H4/PTEN and 7 PTEN/H4 were detected in 126 papillary thyroid carcinomas. "