Roles of gray-scale, Color-Doppler ultrasound and sonoelastography for assessment of thyroid nodules: nodule size correlation

Abstract

(SNs, ≤1cm, n=124) and large (LNs, >1Cm, n=178) nodules. Microcalcifications were more frequent in malignant LNs than in malignant SNs, but showed no significant difference between benign LNs and SNs. Poorly-circumscribed margins were not significantly different between malignant SNs and LNs, but were less frequent in benign LNs than in benign SNs. Among all nodules, marked intranodular vascularity was more frequent in LNs than in SNs. By comparison, shape ratio of anteroposterior to transverse dimensions (A/T) ≥1 was less frequent in LNs than