CTICasesCardiac Bronchus with Accessory Lobe
Imaging findings
CT shows an accessory bronchus arising from the medial wall of the bronchus intermedius and extending medially, supplying a small, aerated accessory cardiac lung lobe that contains its own small pulmonary artery and vein branches.
Key takeaways
An accessory cardiac bronchus is a rare congenital anomaly of the tracheobronchial tree. It is usually a blind-ending pouch but can occasionally supply an accessory lobe. It should be distinguished from a tracheal bronchus, which arises from the trachea.
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