Table 3.
Sonographic characteristics of follicular patterned tumors with papillary‐like nuclear features22
| NIFTP or minimally invasive EFVPTC | EFVPTC – overtlyinvasive | IFVPTC | |
|---|---|---|---|
| Gray‐scale ultrasound |
Circumscribed oval nodulewith a rim Variable echogenicitya |
Hypoechoic nodule with irregularor lobulated margins | Taller‐than‐wide hypoechoicnodule with blurred margins |
| Color Doppler ultrasound | Mostly hypervascular | Mostly hypervascular | Mostly avascular |
Abbreviations: EFVPTC, encapsulated follicular variant of papillary carcinoma with capsular/vascular invasion; IFVPTC, infiltrative follicular variant of papillary carcinoma without capsule; NIFTP, noninvasive follicular thyroid neoplasm with papillary‐like nuclear features.
a
Hypoechoic for microfollicular nodule, isoechoic for macrofollicular nodule.
Minimally invasive = undetectable by ultrasound; overtly invasive = detectable by ultrasound.