CTICasesCongenital Bronchial Artery to Pulmonary Artery Communication
Imaging findings
A filling defect in the right lower pulmonary artery with high Hounsfield units ("black smoke" from unopacified systemic blood) and downstream vessel distension.
Key takeaways
Bronchial-to-pulmonary shunts can cause localized hydrostatic pulmonary edema due to increased systemic pressure downstream.
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