PMC7093741_01
[Upper left corner and upper right corner]: diffuse thickening with phlegmon and emphysema of the soft tissues (green star), from the oral cavity to the anterior mediastinum, near the aortic arch, confirming abscess extension to submandibular, parapharyngeal and retrosternal spaces, associated with bulging of the walls of the airway at the base of the tongue; [Lower left corner and lower right corner]: there is a filling defect in the left internal jugular vein, inferior to C3 - this is consistent with thrombus (red arrow). No extension above the jugular foramen.
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Abscess extension was confirmed to submandibular, parapharyngeal and retrosternal spaces, with secondary bulging of the walls of the airway at the base of the tongue, associated with left internal jugular vein thrombosis (Fig. 1).