Ultrasound image showing the ectopic thyroid. Ultrasound image in a transect through the upper limit of the hyoid bone shows a well-limited tissue structure, with a coarse oval shape, hyperechoic in relation to the homogeneous muscles, reminiscent of the thyroid parenchyma. It should be noted that the thyroid cavity was empty on ultrasound examination.Arrows 1 and 2 allow the estimation of the volume of the ectopic thyroid. It measures 21 × 9 mm.