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From: RETRACTED ARTICLE: Thyroid nodules update in diagnosis and management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 |