Diagnostic Accuracy of the Bethesda System for Reporting Thyroid Cytopathology (TBSRTC): An Institution Experience

Table 1

TBSRTC 2017 Bethesda categories [8].

Bethesda category	Category title	Risk of malignancy if NIFTP = cancer (%)	Risk of malignancy if NIFTP ≠ cancer (%)
I	Nondiagnostic or unsatisfactory	5–10	5–10
II	Benign	0–3	0–3
III	Atypia of undetermined significance (AUS) or follicular lesion of undetermined significance (FLUS)	6–18	10–30
IV	Follicular neoplasm or suspicious for a follicular neoplasm	10–40	25–40
V	Suspicious for malignancy	45–60	50–75
VI	Malignant	94–96	97–99