Concordant expression of protein was found in 91% of those tumors in which PAX8-PPAR gamma mRNA was detected by RT-PCR, whereas a further 20% of follicular tumors were positive for PPAR gamma immunohistochemistry alone.     ///    Detection of the PAX8-PPAR gamma fusion oncogene in both follicular thyroid carcinomas and adenomas..     ///    "Our findings suggest that the PAX8-PPAR gamma fusion protein promotes differentiated follicular thyroid neoplasia, although it is not sufficient per se for carcinogenesis.. "