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Well-defined lesion is noted at level of hyoid and infrainfrahyoid level. It is in mid line and predominently in right paramedian location.
It is mainly cystic lesion with few septa / echoes. NO calcification is noted.
It is deep to platysma.
It is superficial to strap muscles.
Vascularity is noted in wall and in solid parts.
Size :
Craniocaudal - 21 mm
Transverse - 27 mm
Anteroposterior - 9 mm.