Krings T, Geibprasert S, Cruz JP, et al. Neurovascular Anatomy in Interventional Neuroradiology: A Case based approach. New York, Thieme, 2015. pp. 6-9
1. Its usually a remnant of distal right dorsal aorta distal to left subclavian artery, crossing midline to irrigate right upper extremity
2. Diverticulum of Komerell, an outpouching of right dorsal aorta, arises as it crosses the esophagus that occasionally compresses the esophagus and causes dysphagia "dysphagia lusoria", nonspecific thoracic pain, compression of trachea with dyspnea, or arteriotracheal or arterioesophageal fistulas wityh hematemesis or hemoptysis (very rare). Even rarer is subclavian steal of ARSA
3. It can be inferred from anterior displacement of esophagus in mediastinum
4. May need to intervene through the left vertebral artery which can be difficult
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