There is a large, relatively well-defined enhancing left neck mass lesion, likely originating from the left pre-vertebral space extending from C1-C4 levels. It appears mainly isointense on T1WI and hyperintense on T2WI.
This mass is seen involving the left longus colli muscle, extending and encasing the odontoid process of C2, displacing the left carotid sheath vessels anterolaterally and deviating the para-pharyngeal space to the right side.
It is associated with a hyperintense component extending into the left posterolateral neck spaces, insinuating between neck muscles.
A left anterolateral meningocele is noted, arising just anterior to the left jugular foramen, seen posterior to the cervical internal carotid artery.
Few high T2 foci are noted in both globi pallidi (FASI).