Fig. 5
From: Analysis of 665 thyroid nodules using both EU-TIRADS and ACR TI-RADS classification systems
Representative images of nodules with different risk categories according to ACR TI-RADS and EU-TIRADS. A – nodule with mixed composition with isoechoic solid component (category ACR 2/EU 3); B – solid nodule markedly hypoechoic (category ACR 4/ EU 5); C – solid isoechoic nodule with punctate echogenic foci (arrow, category ACR 4/EU 5); D – solid hypoechoic nodule with taller-than-wide morphology (category ACR 4/ EU 5); E – solid hypoechoic nodule with posterior bulging of thyroid’s contour, indicative of extrathyroidal extension (category ACR 5/EU 4)