CTICasesComplete Inferior Accessory Fissure with Aberrant Bronchial Supply
Imaging findings
A complete inferior accessory fissure was noted, isolating a small segment of lung. The bronchial supply to this segment was observed to originate from the middle lobe bronchus, rather than the expected lower lobe, representing an unusual anatomical variant.
Key takeaways
Complete accessory fissures, particularly the inferior accessory fissure, can be associated with anomalous bronchial anatomy. In such cases, the bronchial supply to the isolated segment may originate from an adjacent lobe (e.g., middle lobe) rather than the expected one (e.g., lower lobe), due to the complete anatomical separation provided by the fissure.
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