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[Retro-aortic left brachiocephalic venous trunk. A rare anomaly: 2 cases]
Journal De Radiologie
|April 1, 1988
Summary
Two rare cases of abnormal left brachiocephalic venous trunk trajectory were found using CT scans. The venous trunk passed under the aortic arch, a significant vascular anomaly requiring attention in medical imaging.
Area of Science:
- Cardiovascular anatomy
- Medical imaging
- Vascular anomalies
Background:
- The left brachiocephalic venous trunk is a major vein formed by the union of the internal jugular and subclavian veins.
- Variations in venous anatomy can have clinical significance, particularly during surgical procedures or in the interpretation of imaging studies.
Observation:
- Computed tomography (CT) scans revealed two distinct cases of an unusual trajectory of the left brachiocephalic venous trunk.
- In both instances, the venous trunk followed a path beneath the aortic arch before draining into the superior vena cava.
Findings:
- This anatomical variation, where the left brachiocephalic vein courses under the aortic arch, is considered rare.
- One patient also exhibited a complex anomaly of the aortic arch, indicating potential co-occurrence of cardiovascular malformations.
Implications:
- Recognition of this rare venous anomaly is crucial for accurate diagnosis and to avoid misinterpretation during radiological assessments.
- Understanding such anatomical variations aids in surgical planning and risk mitigation for procedures involving the thoracic vasculature.