PMC5780313_01
The 5-chamber view of the heart at 25.3 weeks showing the fistula between the left coronary artery and coronary sinus (arrow, A). Power Doppler imaging confirming the communication between the left coronary artery and coronary sinus (B). The 4-chamber view of the heart at 29.6 weeks showing the dilated coronary sinus (arrow) with the collapsed left atrium (C).. Ao, aorta; CS, coronary sinus; LA, left atrium; LV, left ventricle; RA, right atrium; RV, right ventricle.
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F1
In the 5-chamber view, the left coronary artery was dilated and directly connected to the coronary sinus (Fig. 1A). Power Doppler sonography confirmed the presence of the fistula between the left coronary artery and coronary sinus (Fig. 1B); thus, the diagnosis of a CAVF was made. Follow-up echocardiography at 29.3, 33.5, and 36.5 weeks of gestation revealed that the CAVF was more obvious and the coronary sinus had become dilated, inducing compression of the left atrium (Fig. 1C).
Postnatal computed tomography showing the dilated left circumflex artery draining into the enlarged coronary sinus on the axial image (arrow, A) and the 3-dimensional volume rendering image (arrow, B).. Ao, aorta; CS, coronary sinus; LAA, left atrial appendage; LCX, left circumflex coronary artery; LMA, left main coronary artery; PA, pulmonary artery.
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F2
Postnatal echocardiography and cardiac computed tomography showed the dilated left main coronary and left circumflex arteries with a fistulous connection to the severely dilated coronary sinus (Fig. 2).