Table 3.

RET/PTC Rearrangement Positive Samples

			RET/PTC detection in the FNA samples		RET/PTC detection in the FFPE samples
Sample ID	Histology	Cytology	RET/PTC1	RET/PTC3	RET/PTC1	RET/PTC3
8	PTC	Malignant	Negative	Positive	Negative	Positive
52	PTC	Malignant	Positive	Negative	Positive	Negative
30	FA	Indeterminate	Positive	Negative	Negative	Negative
40	FA	Indeterminate	Positive	Negative	Negative	Negative
48	FA	Indeterminate	Negative	Negative	Negative	Positive

Matching between the FNA smear and the FFPE sample results could be obtained in two patients. 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 two patients showing positive FNA results, the rearrangement could not be identified in the corresponding FFPE sample.