Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Colour Doppler overlay on B-mode images of mildly heterogeneous thyroid nodules for two different patients: (a) near isoechoic nodule, the borders of which are delineated by the Doppler vascularity; (b) mildly hypoechoic nodule. The presence of internal vascularity in the absence of other concerning features led to BTA classification as U3 (indicating FNAC). Both of these nodules were confirmed as follicular carcinoma at surgery.
