Case report: Imaging features of aorta-right atrial tunnel in a dog using two-dimensional echocardiography and computed tomography

Frontiers in Veterinary Science

Veterinary Science

Ho-Gyun Jeong¹  Taekwon Lee¹  Geunha Kim²  Hakyoung Yoon²  Kichang Lee²  Yewon Ji² 

[1] Animal Medical Center, Jeonju, Republic of Korea;Department of Veterinary Medical Imaging, College of Veterinary Medicine, Jeonbuk National University, Iksan-si, Republic of Korea;

关键词: canine;    aorta-RA tunnel;    aorta-RA shunt;    right atrium;    aortic root;    Valsalva;    right coronary sinus;    cardiovascular anomaly;   

DOI  :  10.3389/fvets.2023.1160390

 received in 2023-02-07, accepted in 2023-06-19,  发布年份 2023

来源: Frontiers

【 摘 要 】

A 7-year-old castrated male Pomeranian dog weighing 5 kg presented with a right-sided continuous murmur without any clinical signs. Thoracic radiographs indicated cardiomegaly and right atrial (RA) bulging. Echocardiography revealed a tunnel originating from the right coronary sinus of Valsalva and terminating in the RA. Contrast echocardiography revealed pulmonary arteriovenous anastomoses. Computed tomography (CT) demonstrated a tortuous shunting vessel that originated from the aorta extending in a ventral direction, ran along the right ventricular wall, and was inserted into the RA. Based on these diagnostic findings, the dog was diagnosed with the aorta-RA tunnel. At the 1-year follow-up visit without treatment, the dog showed no significant change except for mild left ventricular volume overload and mildly decreased contractility. To the best of our knowledge, this is the first case report of an aorta-RA tunnel that has been described in detail using echocardiography and CT in a dog. In conclusion, the aorta-RA tunnel should be included in the clinical differential diagnoses if a right-sided continuous murmur is heard or shunt flow originating from the aortic root is identified.

【 授权许可】

Unknown   
Copyright © 2023 Kim, Ji, Jeong, Lee, Lee and Yoon.