CTICasesBridging Bronchus with Azygos Fissure
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Imaging findings
The patient exhibits an azygos fissure. The left main bronchus has an anomalous, small origin, coming off slightly too far to the right, before resuming a normal caliber. It appears to be a bridging bronchus.
Key takeaways
This case features a combination of an airway anomaly (bridging bronchus) and a vascular/pleural variant (azygos fissure). Although both are congenital findings, they are embryologically unrelated. The bridging bronchus demonstrates a segment of the left main bronchus that is initially diminutive before expanding, representing a rare airway variant.
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