Intramural aortic course in anomalous origin of single coronary artery from the right pulmonary artery: A case report and review of the literature.

Preoperatively determining the intramural aortic course in a case of anomalous origin of single coronary artery from the right pulmonary artery is important for planning surgery, such as the unroofing technique. A thin wall separating the ascending aorta from the common coronary artery on transthoracic echocardiography and a crescent-shaped cross-section of the common coronary artery on computed tomography demonstrate an intramural aortic course of the common coronary artery. We present herein a case of anomalous origin of single coronary artery from the right pulmonary artery with an intramural aortic course and review eight other reported cases. <Learning objective: Some cases of anomalous origin of single coronary artery from the right pulmonary artery may involve an intramural aortic course of the common coronary artery. Preoperative diagnosis of the intramural aortic course, for which transthoracic echocardiography and computed tomography are useful, may be important for planning surgery, such as the unroofing technique.>.