Figure 1. 75-year-old man with pseudoaneurysm in the left parotid gland. (a) Transverse grey-scale ultrasound of the left parotid gland shows a well-circumscribed hypoechoic heterogeneous mass with internal "cystic" spaces (arrows) and calcification (arrowheads). (b) Transverse power Doppler ultrasound of the left parotid gland reveals the presence of colour flow within "cystic" spaces and a supplying artery (arrow) deep to the left parotid mass. (c) Axial spin-echo T₁ weighted MRI (450 ms/13 ms/2 [repetition time/echo time/number of signal averaging]) shows a well-circumscribed mass (arrows) with signal intensity similar to muscle centred in the deep lobe. (d) Coronal post-gadolinium fat-suppressed spin-echo T₁ weighted MRI (520/13/2) shows avid homogeneous enhancement of the lesion. (e) Digital subtraction angiogram of left external carotid artery (lateral projection) confirms a pseudoaneurysm (arrow) with slightly lobulated outline arising from the distal portion of posterior auricular artery (arrowhead). (f) Magnified digital subtraction external carotid arteriogram (lateral projection) shows successful embolisation of the posterior auricular artery by fibred microcoil. Note absence of contrast filling of the aneurysmal sac after the procedure.