Table 5. Histological follow-up of FNAC according to Milan system diagnostic categories.

FNAC: fine-needle aspiration cytology, Cat.: Category.

	Cat. I	Cat. II	Cat. III	Cat. IVa	Cat. IVb	Cat V	Cat VI	Total
No. of cases	2 (3.3%)	9 (15.0%)	1 (1.7%)	28 (46.7%)	2 (3.3%)	5 (8.3%)	13 (21.7%)	60
No. of histological  follow-up	0	1	1	25	2	5	13	47
Benign	0	1	0	19	1	1	2	24
Malignant	0	0	1	6	1	4	11	23
Risk of malignancy	0.0	0.0	100.0	24.0	50.0	80.0	84.6	48.9