A well-defined right neck cystic lesion mainly at infrahyoid region with a small suprahyoid portion. The lesion measured around 3.4 x 4.1 x 3.4 cm (AP, lateromedial, and cephalocaudal, respectively). It exhibits near-water density with an enhancing wall of non-uniform thickness. Laterally, the lesion is in intimate relation to the sternomastoid muscle, inseparable from its medial wall. Anteriorly, it is indenting the posterior surface of the right submandibular gland. Medially, it is related to the carotid sheath with compression and caliber attenuation of the right internal jugular vein from the level of CV3 through CV6.
Small ipsilateral cervical lymph nodes (levels II, III and V) noted.
The ipsilateral parotid gland is of normal CT features.