・ Macrocalcifications rather than microcalcifications

・ Tendency to locate in superolateral portions of upper-middle parts

・ More vascularity than PTC

・ Larger at the time of diagnosis (2.3 ± 1.5 cm vs. 1.1 ± 1.1 cm)

・ Focal cystic degeneration more often than PTC

・ Solid component more homogenous than PTC

・ Regular margins rather than spiculated contours is possible

・ Metastatic lymph nodes of MTC do not display hyperechogenicity

・ The strongest distinguisher is serum calcitonin levels.