|
High suspicion
|
Solid hypoechoic nodule or solid hypoechoic component of a partially cystic nodule with one or more of the following features: irregular margins (infiltrative, microlobulated), microcalcifications, taller than wide shape, rim calcifications with small extrusive soft tissue component, evidence of ETE
|
>70–90
|
Recommend FNA at ≥1 cm
|
|
Intermediate suspicion
|
Hypoechoic solid nodule with smooth margins without microcalcifications, ETE, or taller than wide shape
|
10–20
|
Recommend FNA at ≥1 cm
|
|
Low suspicion
|
Isoechoic or hyperechoic solid nodule, or partially cystic nodule with eccentric solid areas, without microcalcification, irregular margin or ETE, or taller than wide shape.
|
5–10
|
Recommend FNA at ≥1.5 cm
|
|
Very low suspicion
|
Spongiform or partially cystic nodules without any of the sonographic features described in low, intermediate, or high suspicion patterns.
|
<3
|
Consider FNA at ≥2 cm Observation without FNA is also a reasonable option
|
|
Benign
|
Purely cystic nodules (no solid component)
|
<1
|
No biopsy
|
