Conus Branch Fistula to Main Pulmonary Artery: A Rare Coronary Anomaly that May Cause Chest Pain in a Pediatric
Leila Bigdelu1, Ossama Maadarani2, Ali Azari1
1Vascular and Endovascular Surgery Research Center, Mashhad University of Medical Sciences, Mashhad, Iran.
Insights
Coronary artery fistulas (CAFs) are rare heart conditions. This case highlights a unique CAF variant in a child presenting with chest pain, emphasizing the need for thorough diagnosis.
Area of Science:
- Cardiology
- Pediatric Cardiology
- Congenital Heart Disease
Background:
- Coronary artery fistulas (CAFs) are uncommon congenital abnormalities.
- They represent abnormal connections between coronary arteries and cardiac chambers or great vessels.
- While often congenital, iatrogenic causes are increasing due to medical interventions and trauma.
Purpose of the Study:
- To report a rare variant of coronary artery fistula in a pediatric patient.
- To discuss the diagnostic approach and clinical presentation of CAFs in children.
- To highlight potential causes of chest pain in pediatric cardiology.
Main Methods:
- Case report of an 11-year-old boy with atypical chest pain.
- Diagnostic workup included cardiac imaging (details not specified in abstract).
- Review of literature on coronary artery fistulas in pediatric populations.
Main Results:
- The patient was diagnosed with a rare variant of coronary artery fistula.
- The condition did not result in significant hemodynamic complications in this case.
- The patient presented with atypical chest pain, a potential symptom of CAF.
Conclusions:
- Coronary artery fistula is a rare anomaly, often found incidentally.
- Diagnostic tools like echocardiography, CT coronary angiography, MRI, and conventional angiography are crucial for visualization and hemodynamic assessment.
- A fistula between a conus branch and the pulmonary artery is a rare pediatric variation that can cause chest pain.
Abstract:
Coronary artery fistulas (CAFs) are rare congenital coronary anomalies where abnormal communication develops between coronary arteries and cardiac chambers or a thoracic great vessel. CAF is usually diagnosed incidentally with cardiac imaging. Although the majority of fistulas are congenital, iatrogenic CAFs are increasingly observed due to multiple cardiac interventions or direct chest trauma. CAFs in children may result in hemodynamically significant problems due to vascular shunting. We report an 11-year-old boy who presented with atypical chest pain and was found to have a rare variant of CAF; fortunately, he had no significant hemodynamic complications.
Learning Points:
Coronary artery fistula is a rare anomalous connection between the coronary artery and any segment of the systemic or pulmonary circulation and is usually an incidental finding on cardiac imaging.Echocardiography, computed tomography coronary angiography, cardiac magnetic resonance imaging, and conventional coronary angiography are the tools that provide detailed anatomical visualization to confirm vascular connections in addition to the assessment of hemodynamic consequences resulting from the shunt.A coronary fistula between a separately originating conus branch and the main pulmonary artery is a very rare variation in paediatric practice that may be a cause of chest pain in children.
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