Table 3 [8–10, 26–40, 86]: FNA recommendations for diagnostic FNA based on sonographic features
From: RETRACTED ARTICLE: Thyroid nodules update in diagnosis and management
A. Nodules ≥1 cm with high suspicion sonographic pattern |  |
B. Nodules ≥1 cm with intermediate suspicion sonographic pattern |  |
C. Nodules ≥1.5 cm with low suspicion sonographic pattern |  |
D. Nodules ≥2 cm with very low suspicion sonographic pattern (e.g., spongiform) |  |
E. FNA is not required for thyroid nodules that do not meet the above criteria, including all nodules <1 cm |  |
F. FNA is not required for purely cystic nodules |  |