CTICasesLeft Pulmonary Isomerism
Imaging findings
Chest CT shows two morphologically left lungs, with bilateral hyparterial bronchi (bronchi running inferior to the pulmonary arteries), bilateral upper lobes, lower lobes, and lingulae. Abdominal and cardiac situs are normal.
Key takeaways
Left pulmonary isomerism (bilateral left-sidedness) is a rare congenital anomaly where both lungs have a left-sided bronchial branching pattern (hyparterial bronchi). It can occur as an isolated, incidental finding in adults.
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