Fig. 2

Ultrasonographic and pathologic findings of DSVPTC in a 36-year-old woman (Case 6). (A) The “snowstorm” pattern in the right lobe with a hypoechoic nodule of vague border in the longitudinal section of the thyroid. (B) Abundant flow signals in parenchyma of the right lobe and scarce signals inside the nodule in color doppler flow imaging. (C) A fibrotic nodule (broken black line) corresponding to the sonographic hypoechoic nodule with many psammoma bodies inside and outside the nodular area (black arrows) (H&E stain, ×20). (D) One tumor nest (white arrows) and a concentric calcified psammoma body (black arrow) (H&E stain, ×400)