soft tissue cervicofacial emphysema

The

anatomical compartments and their connections as demonstrated by ectopic air. Cervical emphysema in a 63-year-old man with tracheal rupture after endotracheal intubation (respiratory failure in CPOD patient complicated by lung infection). Contrast-enhanced CT scan at supra–hyoid (a and b) and infra-hyoid (c and d) cervical levels, illustrate the cervical fascia and its layers. The superficial or investing layer (green line) is superiorly attached to the superior nuchal line of the occipital, the mastoid process of the temporal bone and the inferior border of the mandible, and inferiorly to the manubrium, clavicles and scapula; laterally it merges with subcutaneous tissues of the neck. The middle fascia (pink line) runs, anteriorly, from the hyoid downwards in front of the trachea and large vessels, ultimately blending with the fibrous pericardium; and posteriorly from the skull base, attaches to the prevertebral fascia, and merges with the investing fascia at the lateral borders of the infrahyoid muscles. The deep or prevertebral layer (blue line) encircles the paraspinous and perivertebral muscles; it runs from the skull base downwards to the coccyx; its more anterior layer contribute to the posterior and lateral wall of the retropharyngeal space and insert on the diaphragm; it gives off a thin lamina, the alar layer, attached to the prevertebral layer by loose connective tissue, creating a potential space between mediastinum and neck, the dangerous space (orange shaded area)—for free movement of air/gas between mediastinum and neck

The

anatomical compartments and their connections as demonstrated by ectopic air. The same patient as in Fig. 3: tracheal rupture after endotracheal intubation. Sagittal (a) and coronal (b) reformatted CT scan illustrate cervico-thoracic continuum through retropharyngeal (orange) and visceral (in between pink lines) spaces

Enhancing

vigilance for cerebral air embolism after pneumonectomy: a case report. A large amount of gas is present in the interstitial space of the neck

Gastrointestinal

perforation: clinical and MDCT clues for identification of aetiology. 77-year-old patient with prolonged dysphagia. Sagittal reformatted image in bone window demonstrates a swallowed perforating denture (*) impinging on the upper oesophagus. There is superficial (arrows) and deep (arrowheads) cervical emphysema