PMC4008512_01
(a) Coronary arteriography showing a large and tortuous arteriovenous malformation originating from the left coronary sinus with a massive venous ectasia draining into the right atrium and vena cava. AV = arteriovenous. LAD = left anterior descending artery. (b) There is an aberrant circumflex artery originating from the arteriovenous malformation. AV = arteriovenous. RCx = ramus circumflex artery. LAD = left anterior descending artery.
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fig1
An aberrant circumflex artery originated from this fistula (Figures 1(a) and 1(b)). 
Arteriovenous fistula originating from the right coronary artery and draining into the vena cava. VC = vena cava. RCA = right coronary artery. AV = arteriovenous.
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fig2
(a) A MRI image showing the arteri-venous malformation originating from the left coronary sinus and draining into the right atrium. Ao = aorta. VCS = vena cava superior. AV = arterio-venous. RA = right atrium. LV = left ventricle. (b) Intra operative image with the site of drainage into the right atrium. (c) Intra-operative image showing the very tortuous arterio-venous fistula.
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fig3
See Figures 3(b) and 3(c).