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Table 3 Ultrasound characteristics of nodules by initial FNA result

From: The role of repeat fine needle aspiration in managing indeterminate thyroid nodules

Lesion characteristic Category I FNA
% of total (n)
Category III FNA
% of total (n)
Solid/solid component 44 (86) 51 (22)
Cystic/cystic component 32 (62) 23 (10)
Hypoechoic 23 (44) 16 (7)
Hyperechoic 8 (16) 5 (2)
Hypervascularity 29 (56) 14 (6)
Microcalcification(s) 18 (34) 21 (9)
Complex nodule 15 (30) 2 (1)