Fine Needle Aspiration of Thyroid Nodules Using the Bethesda System for Reporting Thyroid Cytopathology: An Institutional Experience in a Rural Setting

Table 1

Cohort FNA classification by the Bethesda system for reporting thyroid cytopathology (TBSRTC).

TBSRTC category	Cohort incidence; (%)	TBSRTC expected; incidence [8]	Published incidence by; using TBSRTC [10–13]
I—nondiagnostic	16 (7%)	<10%	2–24%
II—benign	186 (79%)	60–70%	39–77%
III—atypia/follicular lesion of unknown significance (AUS/FLUS)	8 (3%)	<7%	0.8–27%
IV—follicular neoplasm or suspicious for follicular neoplasm (FN/SFN)	12 (5%)	N/A	1–25%
V—suspicious for malignancy (SPTC)	10 (4%)	N/A	1–6%
VI—malignant (PTC)	4 (2%)	3–7%	2–16%