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The classification of the mediastinal course of the BAs determined by the spatial relationships to the tracheobronchus and the esophagus may be clinically useful, because each category of this classification can be determined during esophagectomy and indicates whether the BA is a right or left BA.

Approximately 20% of the cadavers had BAs running dorsally to the LRLN in the sub-aortic arch area. Most of these arteries had the Type III pattern. One-quarter of the BAs with the Type III pattern showed this running pattern. Care must be practiced to safely perform lymphadenectomy for esophageal cancer in patients with Type III BAs.

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