Vieussens’ arterial ring forming a coronary–pulmonary artery fistula with large aneurysmal dilatation: a case report

Vieussens' arterial ring is a rare but clinically significant anomaly with varied presentations; the incidence of VAR remains uncertain. In this case, surgical resection and closure of the fistula were performed to mitigate the risk of rupture and to address the potential haemodynamic consequences. Understanding and documenting such cases will contribute to refining treatment approaches and improving patient care in cardiovascular medicine.