Ultrasound images of the thyroid nodule and the uterine mass. A. A heterogeneous hypoechoic mass was detected in the thyroid. The blurred margins are marked by four arrowheads (→). Coarse calcifications with heavy echoic shadow are highlighted by a white arrow (↑). B. A large mass, containing a sizeable portion of fluid and thick separations, was revealed by ultrasound examination during the pre-operative checkup.