PMC3823386_01
24-year-old male patient with unrepaired truncus arteriosus (TA) admitted to adult congenital cardiology clinic for surgical operation. The three-dimensional volume-rendered cardiac computed tomography angiogram a) Oblique superior-inferior, b) Anterior-left lateral and c) axial maximum intensity projection views show an anatomical pattern consistent with TA Type 1A with persistent left superior vena cava. The right coronary artery branches from the non-coronary sinus at the left side of the truncus.
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F1
MDCT clearly delineated the complex cardiac anatomy in this case with TA [Figure 1a-c]. The right coronary artery branched from the non-coronary sinus on the left side of the truncus [Figure 1a] while the left coronary artery originated from the non-coronary sinus on the right side of the truncus [Figure 2a].
24-year-old male patient with unrepaired truncus arteriosus admitted to adult congenital cardiology clinic for surgical operation. a) Axial maximum intensity projection (MIP) image shows a large subarterial ventricular septal defect (white star) and the left inferior pulmonary vein (arrows) drained into the right side of the left atrium. b) Axial (MIP) image demonstrates the left coronary artery orifice with a retro-aortic course was positioned in the right posterior part of the truncus.
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F2
The right coronary artery branched from the non-coronary sinus on the left side of the truncus [Figure 1a] while the left coronary artery originated from the non-coronary sinus on the right side of the truncus [Figure 2a]. A 2.5 cm VSD was detected on interventricular septum [Figure 2b]. The left inferior pulmonary vein drained into the right side of the left atrium (LA) and a pulmonary vein drained into the left side of the atrium was observed [Figure 2b].