. 2022 Aug 31;33(4):457–471. doi: 10.1007/s12022-022-09729-x

Table 5.

Cancer rate found in the major meta-analyses about The Bethesda System for Reporting Thyroid Cytology (TBSRTC) and UK Royal College of Pathologists (UK RCPath), and present one about Italian consensus for the classification and reporting of thyroid cytology (ICCRTC)

Classification system	First author of the meta-analysis [ref]	Subcategories of ITN	Cancer rate (95% CI)
The Bethesda System for Reporting Thyroid Cytology (BSRTC)	Vuong et al. [9]	AUS/FLUS	31% (24 to 37)
	Vuong et al. [9]	FN/SFN	29% (26 to 32)
	Straccia et al. [10]	AUS/FLUS	27% (23 to 31)
	Straccia et al. [10]	FN/SFN	31% (28 to 36)
UK Royal College of Pathologists (UK RCPath)	Poller et al. [8]	Thy3a	25% (20 to 31)
	Poller et al. [8]	Thy3f	31% (24 to 39)
Italian consensus for the classification and reporting of thyroid cytology (ICCRTC)	Trimboli [present]	TIR3A	12% (9 to 16)
	Trimboli [present]	TIR3B	44% (40 to 49)

All numbers are rounded to the nearest decimal

ITN indeterminate thyroid nodule at FNAC, 95% CI 95% confidence interval