Fig. 2
From: Thyroid hemiagenesis with a TI-RADS 2 nodule in the contralateral lobe

Ultrasound of the right thyroid nodule a a well-defined nodule, with smooth margins, wider than taller, hypoechoic, spongiform composition, and with no echogenic foci b Color and spectral Doppler (triplex Doppler) of the nodule showing moderate and low resistance flow respectively