Saccular aneurysm of congenital coronary arteriovenous fistula
K M Krishnamoorthy1, Sekhar Rao
1Department of Cardiology, Sri Sathya Sai Institute of Higher Medical Sciences, Puttaparthi-515 134, India. saikm@sctimst.ker.nic.in
Insights
A rare congenital coronary arteriovenous fistula with an aneurysm was successfully treated by surgical closure of the drainage site and fistula ligation. This case highlights effective management of a complex cardiac anomaly.
Area of Science:
- Cardiology
- Cardiovascular Surgery
- Medical Imaging
Background:
- Congenital coronary arteriovenous fistulas are rare vascular anomalies.
- Aneurysmal dilation within these fistulas presents unique diagnostic and therapeutic challenges.
Purpose of the Study:
- To report a rare case of a congenital coronary arteriovenous fistula with an aneurysm.
- To describe the diagnostic approach and successful surgical management of this condition.
Main Methods:
- Echocardiography and selective angiography were used for diagnosis.
- Surgical intervention involved cardiopulmonary bypass, direct closure of the fistula drainage into the right atrium, and ligation at the fistula origin.
Main Results:
- Echocardiography revealed a dilated left circumflex artery with an aneurysm.
- Selective angiography confirmed the aneurysm and its drainage into the posterior right atrial wall.
- Successful surgical repair was achieved with direct closure and ligation.
Conclusions:
- Congenital coronary arteriovenous fistulas with aneurysms, though rare, require precise diagnosis and tailored surgical intervention.
- Direct surgical closure and ligation offer an effective treatment modality for such complex cases.
Abstract:
A rare aneurysm of a congenital coronary arteriovenous fistula is reported. Echocardiography showed a dilated left coronary and left circumflex artery with normal left anterior descending artery. A dilated structure near the crux was confirmed to be a large aneurysm of circumflex coronary artery on selective angiography. It drained into the posterior right atrial wall. Under cardiopulmonary bypass, the drainage site was identified and directly closed from within the right atrium. Fistula was ligated at origin. The diagnostic and different treatment modalities are reviewed.
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