Fig. 6

Axial image of MDCTA in an adult male patient who sustained a penetrating stab wound to the left zone 2 of the neck demonstrates a resultant traumatic left arteriovenous fistula between the left common carotid artery (red arrow) and adjacent internal jugular vein (blue arrowhead). It was subsequently closed through radiological intervention. Note the haematoma affecting the overlying left sternocleidomastoid muscle parenchyma and the large haematoma and oedema in the left parapharyngeal and extralaryngeal soft tissues causing mass effect and significant displacement of the laryngopharynx to the contralateral side. The patient is intubated. (The authors’ departmental protocol is to arbitrarily register the year of birth for any adult patient who is unconscious or intubated and ventilated, where details are unavailable, as 1900 in the acute admission situation—the patient’s age has therefore been “erroneously” calculated as 106 years by the scanner as shown in the top right-hand corner of this image)