From the case:
Cardiac bronchus
{"current_user":null,"step_through_annotations":true,"access":{"can_edit":false,"can_download":true,"can_toggle_annotations":true,"can_feature":false,"can_examine_pipeline_reports":false,"can_pin":false},"extraPropsURL":"/studies/9406/annotated_viewer_json?lang=us"}
Coronal reconstruction of a chest CT demonstrates a small blind ending stump extending inferiorly and medially from the bronchus intermedius. There is no associated mass or consolidation.
Findings are those of an incidental cardiac bronchus.
Case Discussion
A cardiac bronchus is a rare variant, found in only ~0.3% of individuals. It arises from the bronchus intermedius just after the bifurcation of the right upper lobe bronchus and in about half of cases it aerates lung parenchyma.