There is a unilocular low-density cystic mass centred upon the sublingual space which measures up to 5.4 x 5.1 x 6.1 cm (TR x AP x CC). The mass has subtle wall enhancement and an internal density of 15-20HU.
The mass appears centrally positioned between the two genioglossus muscles, splaying the genioglossus and mylohyoid muscles laterally on either side. Both submandibular glands are seen separately and are normal in appearance. Superiorly the mass displaces the tongue and contacts the uvula posteriorly but the oropharyngeal airway remains patent. Anteriorly the mass abuts the mandible. Inferiorly the mass abuts but does not extend beyond the hyoid. There are no overlying inflammatory changes evident