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Double aortic arch in a Siamese cat
M Yarim1, M E Gültiken, S Oztürk
1University of Ankara, Faculty of Veterinary Medicine, Department of Pathology, Diskapi, Turkey.
Veterinary Pathology
|July 27, 1999
Summary
A double aortic arch, a rare vascular ring anomaly, was identified in a Siamese cat presenting with stridor and dysphagia. This condition constricted the esophagus and trachea, impacting the animal's breathing and swallowing.
Area of Science:
- Veterinary Cardiology
- Comparative Pathology
- Congenital Cardiovascular Abnormalities
Background:
- Vascular ring anomalies are congenital defects affecting the aortic arch development.
- These anomalies can lead to esophageal and tracheal compression, causing clinical signs in affected animals.
- Double aortic arch is a specific type of vascular ring anomaly with varying prevalence across species.
Observation:
- A case study of an 8-week-old female Siamese cat with clinical signs of stridor and dysphagia.
- Radiographic findings revealed esophageal dilation and constriction at the fifth intercostal space.
- Necropsy confirmed constriction of the esophagus and trachea at the base of the heart.
Findings:
- The constriction was caused by a double aortic arch, a vascular ring anomaly where both right and left aortic arches were well-developed.
- The ascending aorta bifurcated into two asymmetrical arches, with the right arch being larger than the left.
- Anomalous origins of major arteries from the aortic arches were noted.
Implications:
- This case highlights the importance of recognizing double aortic arch as a cause of respiratory and swallowing difficulties in cats.
- Accurate diagnosis through radiography and necropsy is crucial for understanding the pathology.
- Understanding such congenital cardiovascular anomalies aids in veterinary diagnostics and potential management strategies.