An asymptomatic 17-month-old, 18.5-kg, male Staffordshire Bull Terrier was referred due to a heart murmur. Examination revealed a grade 3/6 left apical systolic and right apical 3/6 heart murmur. Echocardiography showed volume overload of the left ventricle and mild systolic dysfunction with a left-right flow over the interventricular septal region. Cardiac gated computed tomography revealed anomalous origin of the right coronary artery from the pulmonary artery, an extensive network of collateral blood vessels connected the right and left coronary arteries, with bronchial and left intercostal arteries also connected to the network of collateral blood vessels, markedly enlarged right and left coronary arteries and left coronary sinus. With varied presentation, coronary anomalies are difficult to recognise and classify and to the best of our knowledge this is the first case of anomalous origin of the right coronary artery from the pulmonary artery diagnosis in the dog.

中文翻译：

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斯塔福郡斗牛梗的右冠状动脉异常起源于肺动脉

一只无症状的 17 个月大、重 18.5 公斤的雄性斯塔福郡斗牛梗因心脏杂音被转诊。检查发现左心尖收缩期 3/6 级和右心尖 3/6 级心脏杂音。超声心动图显示左心室容量超负荷和轻度收缩功能障碍，室间隔区域存在左右血流。心脏门控计算机断层扫描显示右冠状动脉异常起源于肺动脉，广泛的侧支血管网络连接左右冠状动脉，支气管和左肋间动脉也与侧支血管网络相连，且明显扩大右冠状动脉和左冠状动脉以及左冠状窦。由于表现多样，冠状动脉异常很难识别和分类，据我们所知，这是第一例狗肺动脉诊断中右冠状动脉起源异常的病例。