Journal of Veterinary Clinics (한국임상수의학회지)

The Korean Society of Veterinary Clinics (한국임상수의학회)
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Diagnosis of Persistent Right Aortic Arch with an Aberrant Left Subclavian Artery using CT in a Poodle Dog

  • Ryu, Chan-Young (College of Veterinary Medicine, Kyungpook National University) ;
  • Lee, Sang-Gwan (Joeun Animal Medical Center) ;
  • Lee, Kija (College of Veterinary Medicine, Kyungpook National University)
  • Received : 2017.08.16
  • Accepted : 2018.02.21
  • Published : 2018.02.28
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Abstract

A 6-month-old, female poodle presented with a three-month history of persistent regurgitation immediately after eating. On physical examination, the patient was emaciated and dehydrated. Thoracic radiography showed ventral displacement of the trachea and increased radiopacity in the mediastinum, cranial to the heart base. A severely dilated esophagus was identified cranial to the heart on esophagram. Computed tomography (CT) revealed the esophagus was filled with gas, fluid and a little of contrast and dilated from caudo-cervical to cranio-thoracic part. The esophageal diameter was markedly decreased at the heart base. In addition, the trachea was displaced to the left-ventral side of the right aortic trunk and an aberrant left subclavian artery originating from the aorta was identified. There was no evidence of abdominal vascular anomaly. Based on diagnostic imaging, persistent right aortic arch (PRAA) with an aberrant left subclavian artery was diagnosed. The patient did not undergo surgery and died at 15 days after diagnosis. This report describes imaging diagnosis, including CT and radiography in a weaned dog with regurgitation due to esophageal obstruction by PRAA. When PRAA is suspected and conventional radiography or contrast study is insufficient for diagnosis, CT may be helpful for diagnosing PRAA.

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References

  1. Biasato I, Lanteri G, Guarda F, Capucchio MT, Marino F, Briguglio G, Macri F. Unusual combination of multiple vascular anomalies in a German Shepherd puppy with megaoesophagus. Anat Histol Embryol 2017; 46: 216-219. https://doi.org/10.1111/ahe.12260
  2. Birchard SJ, Sherding RG. Diseases of the esophagus and disorders of swallowing. In: Saunders Manual of Small Animal Practice, 3rd ed. St. Louis: Saunders. 2006: 650-652.
  3. Bishop S. Development: the heart and great vessels. In: Fox PR, Sisson D, Moise NS, eds. Canine and feline cardiology, 2nd ed. Philadelphia: WB Saunders. 1999: 3-12.
  4. Bottorff B, Sisson DD. Hypoplastic aberrant left subclavian artery in a dog with a persistent right aortic arch. J Vet Cardiol 2012; 14: 381-385. https://doi.org/10.1016/j.jvc.2012.01.013
  5. Buchanan JW. Tracheal signs and associated vascular anomalies in dogs with persistent right aortic arch. J Vet Intern Med 2004; 18: 510-514. https://doi.org/10.1111/j.1939-1676.2004.tb02576.x
  6. Buchanan JW. Causes and prevalence of heart disease. In: Kirk's Current Veterinary Therapy XIV, 11th ed. Philadelphia: W. B. Saunders. 1992: 647-655.
  7. Buchannan JW. Prevalence of cardiovascular disorders. In: Canine and Feline Cardiology, 2nd ed. Philadelphia: WB Saunders. 1999: 457-470.
  8. Christiansen KJ, Snyder D, Buchanan JW, Holt DE. Multiple vascular anomalies in a regurgitating German Shepherd puppy. J Small Anim Prac 2007; 48: 32-35. https://doi.org/10.1111/j.1748-5827.2006.00105.x
  9. Findji L, Degueursce C. Symmetrical double aortic arch in a dog. Vet Rec 1999; 145: 465-466. https://doi.org/10.1136/vr.145.16.465
  10. Gunby JM, Hardie RJ, Bjorling DE. Investigation of the potential heritability of persistent right aortic arch in Greyhounds. J Am Vet Med Assoc 2004; 224: 1120-1122. https://doi.org/10.2460/javma.2004.224.1120
  11. Henjes CR, Nolte I, Wefstaedt P. Multidetector-row computed tomography of thoracic aortic anomalies in dogs and cats: Patent ductus arteriosus and vascular rings. BMC Vet Res 2011; 7: 57. https://doi.org/10.1186/1746-6148-7-57
  12. Holt D, Heldmann E, Michel K, Buchanan JW. Esophageal obstruction caused by a left aortic arch and an anomalous right patent ductus arteriosus in two German Shepherd littermates. Vet Surg 2000; 29: 264-270. https://doi.org/10.1053/jvet.2000.4394
  13. Hurley K, Miller MW, Willard MD, Boothe HW. Left aortic arch and right ligamentum arteriosum causing esophageal obstruction in a dog. J Am Vet Med Assoc 1993; 203: 410-412.
  14. Joly H, D'Anjou M, Huneault L. Imaging diagnosis - CT angiography of a rare vascular ring anomaly in a dog. Vet Radiol Ultrasound 2008; 49: 42-46. https://doi.org/10.1111/j.1740-8261.2007.00315.x
  15. Kim NS, Alam MR, Choi IH. Persistent right aortic arch and aberrant left subclavian artery in a dog: a case report. Vet Med (Praha) 2006; 51: 156-160.
  16. Krebs IA, Lindsley S, Shaver S, MacPhail C. Short- and long-term outcome of dogs following surgical correction of a persistent right aortic arch. J Am Anim Hosp Assoc 2014; 50: 181-186. https://doi.org/10.5326/JAAHA-MS-6034
  17. Loughin CA, Marino DJ. Delayed primary surgical treatment in a dog with a persistent right aortic arch. J Am Anim Hosp Assoc 2008; 44: 258-261. https://doi.org/10.5326/0440258
  18. Menzel J, Distl O. Unusual vascular ring anomaly associated with a persistent right aortic arch and an aberrant left subclavian artery in German Pinschers. Vet J 2011; 187: 352-355. https://doi.org/10.1016/j.tvjl.2009.12.016
  19. Moonan N, Mootoo NFA. Double aortic arch with a hypoplastic left arch and patent ductus arteriosus in a dog. J Vet Cardiol 2007; 9: 59-61. https://doi.org/10.1016/j.jvc.2005.09.008
  20. Muldoon MM, Birchard SJ, Ellison GW. Long-term results of surgical correction of persistent right aortic arch in dogs: 25 cases (1980-1995). J Am Vet Med Assoc 1997; 210: 1761-1763.
  21. Patterson DF. Epidemiologic and genetic studies of congenital heart disease in the dog. Circ Res 1968; 23: 171-202. https://doi.org/10.1161/01.RES.23.2.171
  22. Pownder S, Scrivani PV. Non-selective computed tomography angiography of a vascular ring anomaly in a dog. J Vet Cardiol 2008; 10: 125-128. https://doi.org/10.1016/j.jvc.2008.09.003
  23. Schwarz T, Saunders J. Heart and vessels. In: Veterinary Computed Tomography, 1st ed. West Sussex: Wiley-Blackwell. 2011: 229-237.
  24. White RN, Burton CA, Hale JSH. Vascular ring anomaly with coarctation of the aorta in a cat. J Small Anim Pract 2003; 44: 330-334. https://doi.org/10.1111/j.1748-5827.2003.tb00164.x
  25. Wisner ER, Zwingenberger AL. Heart, pulmonary vasculature, and great vessles. In: Atlas of Small Animal CT and MRI, 1st ed. Iowa: Wiley-Blackwell. 2015: 423-433.