Though your question is not very clear your CT scan is suggestive of RANULA means that may be the cause for the swelling. A type of RANULA known as plunging ranula can present as swelling in the neck. If you can send the picture of the swelling it will be helpful to advise further
Next Steps
Consult nearby ENT specialist for confirmation of diagnosis and appropriate treatment if required.
Answered2017-12-15 01:23:49
Let others know if this answer was helpful