A three-year-old, spayed female, Bichon Frise was diagnosed with an anomalous origin of the left coronary artery from the pulmonary artery, a rare congenital coronary artery defect which has only been reported in two other dogs. Echocardiography was initially performed, though the final diagnosis was made with angiography and computed tomography angiography. An extensive network of collateral coronary circulation allowed for communication between the dilated, tortuous right coronary artery, and the anomalous left coronary artery. Though collateral circulation likely prolonged the patient's life, it is suspected that coronary steal phenomenon and chronic myocardial ischemia ultimately led to fatal ventricular arrhythmias. The dog died suddenly at the age of six, three years after initial diagnosis.

一只三岁的绝育雌性比熊犬被诊断出左冠状动脉异常起源于肺动脉，这是一种罕见的先天性冠状动脉缺陷，仅在另外两只狗中报告过。最初进行了超声心动图检查，但最终诊断是通过血管造影和计算机断层扫描血管造影做出的。广泛的侧支冠状循环网络允许扩张、曲折的右冠状动脉和异常的左冠状动脉之间的交通。尽管侧支循环可能延长患者的生命，但人们怀疑冠状动脉窃血现象和慢性心肌缺血最终导致致命的室性心律失常。这只狗在六岁时突然死亡，即初次诊断三年后。