Background

The dual origin of the circumflex artery from the main stem of the left coronary artery is rare variation of normal coronary, which is not reported in previous literature. We report a case of old man with the dual origin of the circumflex artery from the main stem of the left coronary artery.

Methods and Results

A 58-year-old man presented with chest pain and dyspnea. The echocardiogram and Laboratory examination are no obvious abnormalities. He was referred to coronary computed tomography angiography (CCTA). The CCTA showed the proximal circumflex artery forming a Y-shaped bifurcation with the dual origin of the main stem of the left coronary artery.

Discussion

The dual origin of the circumflex artery is extremely rare variation of normal coronary. Though catheter angiography may be performed for preoperative identification of various coronary artery, it is limited in the description of the relationship of the coronary arteries to the cardiac structures and great vessels. CCTA can help in noninvasive characterization of coronary anomalies with respect to their origin, course, and spatial relations. The preoperative findings of various coronary artery are very important for achieving an accurate diagnosis and formulating the appropriate procedural planning and intraprocedural management.

Conclusion

CCTA findings of various CAAs are is important for achieving an accurate diagnosis and formulating the appropriate procedural planning and intraprocedural management.