CTICasesSystemic arterial supply to normal lung without sequestration
Imaging findings
CT scan shows a normal-appearing left lung base that is ventilated by a normal bronchial connection but is supplied by a large systemic artery arising directly from the descending thoracic aorta.
Key takeaways
Systemic arterial supply to a normally ventilated segment of the lung is a rare congenital vascular anomaly. It is distinguished from bronchopulmonary sequestration by the presence of normal bronchial connections and lung parenchyma, and from acquired neovascularization by the large caliber of the congenital feeding vessel.
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