CTICasesSystemic Arterial Supply to Normal Lung
Imaging findings
CTA of the chest shows an anomalous systemic artery arising directly from the descending thoracic aorta and supplying the right lower lobe. The supplied lung parenchyma is normal, with no signs of sequestration.
Key takeaways
Systemic arterial supply to a normal lung (pseudosequestration) is a rare congenital anomaly where a segment of normal lung is supplied by a systemic artery. Unlike sequestration, the bronchial tree and venous drainage are normal.
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