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Anat Histol Embryol. 2017 Apr;46(2):216-219. doi: 10.1111/ahe.12260. Epub 2017 Jan 3.

Unusual Combination of Multiple Vascular Anomalies in a German Shepherd Puppy with Megaoesophagus.

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Department of Veterinary Sciences, University of Turin, Largo Paolo Braccini 2, 10095, Grugliasco (TO), Italy.
Department of Veterinary Sciences, University of Messina, Polo Universitario dell'Annunziata, 98168, Messina, Italy.


A 2-months-old male German shepherd puppy was referred for regurgitation and delayed growth. Radiographic and endoscopic investigations revealed a precardiac megaoesophagus and oesophageal constriction at the level of the heart base. At post-mortem examination, a specific form of persistent right aortic arch characterized by an aberrant left subclavian artery in combination with a ligamentum arteriosum originating at the aberrant left subclavian artery (PRAA-SA-LA) was detected. A complete-type persistent left cranial vena cava (PLCVC) was also observed. This is the first report describing the association between PRAA-SA-LA and PLCVC in a dog with megaoesophagus.

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