Table 2.

PAX8/PPARG Rearrangement Positive Samples

			PAX8/PPARG detection in the FNA samples			PAX8/PPARG detection in the FFPE samples
Sample ID	Histology	Cytology	PAX8 (exon 8)/PPARG	PAX8 (exon 9)/PPARG	PAX8 (exon 10)/PPARG	PAX8 (exon 8)/PPARG	PAX8 (exon 9)/PPARG	PAX8 (exon 10)/PPARG
23	FTC	Indeterminate	Positive	Negative	Negative	Negative	Negative	Negative
132	FTC	Indeterminate	Positive	Negative	Negative	Negative	Negative	Negative
133	FTC	Indeterminate	Positive	Negative	Negative	Negative	Negative	Negative
161	FTC	Indeterminate	Positive	Negative	Negative	Positive	Negative	Negative
29	FA	Indeterminate	Negative	Negative	Negative	Negative	Negative	Positive
50	FA	Indeterminate	Positive	Positive	Positive	Positive	Positive	Positive
81	FA	Indeterminate	Negative	Positive	Positive	Negative	Negative	Positive

In three samples, it was possible to match PAX8/PPARG expression between corresponding FNA and FFPE samples (two FA and one FTC). In one patient, in whom the FFPE sample was positive for the rearrangement, the rearrangement could not be detected in the corresponding FNA sample, and in three patients showing positive FNA results, the rearrangement could not be identified in the corresponding FFPE sample.

FNA, fine needle aspiration; FFPE, formalin-fixed paraffin-embedded.