Table 2. Implied risk of malignancy per each category of the Bethesda system compared with malignancy rates of our study.

Bethesda	Risks of malignancy (% )	Result (%)
I	5-10	0
II	0-3	4
III	~10-30	40
IV	25-40	69.2
V	50-75	100
VI	97-99	100