PMC9899462_01
(a) Multiple subcutaneous right parieto-occipital dilated vessels (red arrows). (b) Arterial phase angiography showing feeders from the right occipital artery (purple arrow) to the arteriovenous fistula (green arrow). (c) Venous phase angiography showing the arteriovenous fistula (green arrow) and dilated right superficial temporal vein (blue arrow). (d) Volume rendering reconstruction showing the arteriovenous fistula (green arrow), superficial temporal artery (grey arrow), and dilated superficial temporal vein (blue arrow).
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F1
In 2021, a computed tomography angiography showed subcutaneous right parieto-occipital dilated vessels representing an arteriovenous fistula between parietal branches of the right superficial temporal artery and branches of the right occipital artery to the right superficial temporal vein [Figure 1].
(a) Resolution of dilated vessels on physical examination (red arrow). (b) Volume rendering reconstruction showing the embolization materials in the fistula, right occipital, and right superficial temporal arteries (green arrows).
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F2
The fistula was embolized using coils and PHIL liquid embolic fluid through micro-catheter direct percutaneous puncture; additionally, proximal right superficial temporal and occipital arteries selective embolizations with coils were carried out, achieving occlusion of the fistula and afferent arteries [Figure 2].