Table 2.

Follow-up information of the NIFTP and EFVPTC samples.

IDa	Reclassification	Mutation	Treatment	Surgery (date)	Structural disease	Biochemical disease	End-of-follow-up findings	Time of final visit (years)
1	NIFTP	Negative	TT	2006	No	No	No evidence of disease	11.4
2	NIFTP	Negative	TT + RAI	2005	No	No	No evidence of disease	12.5
3	NIFTP	Negative	TT + RAI	2006	No	No	No evidence of disease	4.8
4	NIFTP	Negative	LB	2009	NA	NA	Dead by other causes	2.0
5	NIFTP	Negative	LB	2015	No	No	No evidence of disease	3.0
6	NIFTP	NRAS Q61R	TT + RAI	2006	No	No	No evidence of disease	9.7
7	EFVPTC	Negative	LB	2001	No	No	No evidence of disease	8.9
8	EFVPTC	Negative	TT	2010	No	No	No evidence of disease	7.7
FTAb	NIFTP	Negative	LB	2003	NA	NA	Lost to follow-up	NA

^aID according to Table 1. ^bSample originally classified as FTA that showed nuclear characteristics at the periphery of the lesion that met the NIFTP criteria.

EFVPTC, encapsulated follicular variant of papillary thyroid carcinoma; NA, not available; NIFTP, noninvasive follicular thyroid neoplasm with papillary-like nuclear features; LB, lobectomy; LCD, lateral compartment dissection; RAI, radioactive iodine ablation; TT, total thyroidectomy.