CTICasesLeft Pulmonary Isomerism
Imaging findings
Coronary CT reconstruction shows bilateral hyparterial bronchi (bronchi coursing below the pulmonary arteries), bilobed lungs, and a persistent left superior vena cava, consistent with left pulmonary isomerism (polysplenia syndrome).
Key takeaways
Left pulmonary isomerism is a form of heterotaxy syndrome characterized by bilateral left-sidedness. Key features include bilateral two-lobed lungs, bilateral hyparterial bronchi, and splenic abnormalities (polysplenia). Evaluating the relationship between pulmonary arteries and bronchi is crucial to make this diagnosis.
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