Multimodality imaging of left circumflex artery to coronary sinus fistula

Area of Science:

• Cardiology
• Medical Imaging
• Congenital Heart Disease

Background:

• Coronary artery fistula (CAF) is a rare congenital anomaly.
• Most patients with CAF are asymptomatic, but complications like cardiac failure can arise.
• Traditional diagnostic methods include echocardiogram and conventional angiography.

Observation:

• A case of a left circumflex artery fistula to the coronary sinus was identified.
• The condition was initially suspected using echocardiography.
• ECG-gated CT coronary angiography was employed for definitive diagnosis.

Findings:

• Computed tomography (CT) coronary angiography provides non-invasive visualization of CAF anatomy.
• CT offers greater accuracy in delineating the course and communications of coronary artery fistulae.
• ECG-gated CT successfully confirmed the diagnosis of a left circumflex artery to coronary sinus fistula.

Implications:

• Advanced imaging technologies like CT angiography enhance diagnostic capabilities for rare cardiac anomalies.
• Non-invasive CT angiography can improve the accuracy and efficiency of diagnosing coronary artery fistulae.
• This case highlights the utility of ECG-gated CT in managing complex coronary artery anomalies.