CTICasesUnilateral Absence of the Left Pulmonary Artery
Imaging findings
Tracheal deviation, volume loss in the left lung, and a likely right-sided aortic arch. CT confirmed the absence of the left pulmonary artery, with extensive tortuous systemic arterial supply (bronchial arteries) compensating for the flow.
Key takeaways
Systemic collateral flow can be so robust that it mimics pulmonary reticulation on imaging.
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