Aberrant Subclavian Arteries, like PRAA, are congenital vascular anomalies which occur in a variety of mammals (including humans), and can involve the left or right subclavian artery. The symptoms are similar - regurgitation of solid food beginning at weaning, failure to thrive due to lack of nutrition, secondary megaesophagus - due to the constriction of the esophagus. Both conditions require similar corrective surgery to prevent a young demise.
Sometimes both Persistent Right Aortic Arch and Aberrant Subclavian Artery occur together, and might also occur with other congenital vascular ring anomalies.
Aberrant Subclavian Arteries - from The American Journal of Roentgenology
Cat: PubMed (Following the surgical transection of the aberrant left subclavian artery, the cat made an uneventful recovery, showing normal swallowing function with no evidence of regurgitation. Twelve months after surgery, the cat had no special dietary requirements and remained clinically normal)
Bengal Tiger: Journal of Zoo & Wildlife Medicine (The tiger recovered well from anesthesia and surgery. Solid food was slowly introduced over a 2-mo period without any regurgitation. The cub gained weight rapidly after surgery)
Dog: Veterinarni Medicina (After the surgical correction the dog recovered from regurgitation and regained nearly full function of her oesophagus without any noticeable complications during a 10 months follow-up period)
