Does Tumor Size Influence the Diagnostic Accuracy of Ultrasound-Guided Fine-Needle Aspiration Cytology for Thyroid Nodules?

Table 1

Final pathological results of the nodules divided according to the Bethesda fine-needle aspiration cytology (FNAC) categories.

	Nondiagnostic; ()	Benign; ()	AUS; ()	Suspicious FN; ()	Suspicious malignancy ()	Malignancy; ()
NH ()	12	101	55	13	1	0
Thyroiditis ()	3	6	5	2	0	0
FA/HA ()	0	1	5	10	1	0
FTC ()	0	3	10	9	1	2
MTC ()	0	1	6	0	1	1
PTC ()	17	13	64	3	73	270
ATC ()	0	0	0	0	1	0
Malignant risk (%)	53	13.6	55	32	97	100

NH: nodular hyperplasia; FA: follicular adenoma; HA: Hürthle cell adenoma; FTC: follicular thyroid carcinoma; MTC: medullary thyroid carcinoma; PTC: papillary thyroid carcinoma; ATC: anaplastic thyroid carcinoma; AUS: atypia of undetermined significance.