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CASE REPORT

Transcatheter Closure of Coronary Artery Fistula with Giant Aneurysm by Arteriovenous Loop Approach: A Case Report

Haojie Zhang#, Caiqing Deng#, Xintian Liu, Feng Li, Menghuan Yan, Xuan Zheng*, Gangcheng Zhang*
Center of Structural Heart Disease, Zhongnan Hospital of Wuhan University, Wuhan, China
* Corresponding Author: Xuan Zheng. Email: email; Gangcheng Zhang. Email: email
# These authors contributed equally to this work as the first authors

Structural and Congenital Heart Disease https://doi.org/10.32604/schd.2026.079571

Received 23 January 2026; Accepted 07 August 2026; Published online 18 August 2026

Abstract

Background: Adult congenital coronary artery fistulas (CAFs) are rare cardiac structural abnormalities that present with diverse clinical manifestations and complex anatomical features. Cases primarily presenting with arrhythmia are exceptionally rare. Percutaneous intervention or surgical correction offers effective strategies for mitigating patients’ symptoms. Case Description: We report a 57-year-old male with CAFs who presented with palpitations as the initial symptom. Both transthoracic echocardiography (TTE) and cardiac computed tomography angiography (CTA) confirmed a right coronary artery-right atrial fistula complicated by a giant aneurysm. Following transcatheter interventional closure of the CAFs, the patient remained in sinus rhythm during the 2-year follow-up. Conclusion: This case report describes different clinical presentation types of giant coronary artery aneurysms and emphasizes the pivotal role of multimodal imaging in the diagnosis and treatment of CAFs.

Keywords

Interventional therapy; congenital coronary artery fistula; giant coronary aneurysm; arrhythmia

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