CTICasesIsolated Crisscrossed Pulmonary Arteries
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Imaging findings
CT showed a slightly unusual configuration of the pulmonary arteries, where the left pulmonary artery arises above the right and courses over it, appearing 'twisted.' A 3D reconstruction confirmed this crisscrossed appearance. There were no other findings of congenital heart disease, other vascular abnormalities, or significant airway abnormalities.
Key takeaways
This is an isolated finding of crisscrossed pulmonary arteries, a condition typically associated with other conotruncal abnormalities in congenital heart disease. Its occurrence in isolation, without any other cardiac or vascular anomalies, is exceedingly rare and has not been reported in case series. The patient was incidentally found to have this during an evaluation for possible pulmonary hypertension related to HIV.
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