What question did this study set out to answer?

To describe an unusual case of partial anomalous pulmonary venous drainage in a pediatric patient.

June 4, 2026

Hitherto unreported pattern of partial anomalous pulmonary venous drainage into subaortic left innominate vein

Key Points

To describe an unusual case of partial anomalous pulmonary venous drainage in a pediatric patient.
Cardiac computed tomography angiography was performed to evaluate ventricular septal defect and pulmonary atresia.
Imaging findings of the combined anomaly were documented.
Imaging showed anomalous drainage of the left superior pulmonary vein into the retroaortic left brachiocephalic vein.
The retroaortic left brachiocephalic vein joined the right brachiocephalic vein to form the superior vena cava.
Recognition of this anomaly is crucial for accurate imaging interpretation and surgical planning.

Abstract

We present the case of a 9-year-old girl who underwent cardiac computed tomography angiography to evaluate ventricular septal defect (VSD) with pulmonary atresia. Imaging revealed a rare anomalous drainage of the left superior pulmonary vein into a retroaortic left brachiocephalic vein (LBCV). This vein coursed posterior to the ascending aorta before joining the right brachiocephalic vein (RBCV) to form the superior vena cava (SVC). Recognition of this uncommon combined anomaly is essential to prevent misinterpretation on imaging and to ensure appropriate surgical planning when intervention is necessary.

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