Consecutive patients with the final diagnosis of Hashimoto's thyroiditis - case 10 (1251) (ultrasonographic picture 3)

Right lobe, longitudinal view. The dorsal largest hypoechogenic area was described as suspicious on the previous ultrasound examination and in fact this is really an infiltrative pattern: the upper part of this area (left in the image) invades the normal parenchyma. However, the infiltrative process in this case is not a tumor but the thyroiditis.