Vieussens’ Arterial Ring Visualized by MDCT

An unusual image of Vieussens’ arterial ring communicating with the pulmonary artery

Vieussens’ arterial ring (VAR) is a collateral pathway between the conus branches of the right and left coronary arteries that was first described by French anatomist Raymond de Vieussens. VAR’s are observed in 48% of the population; however, pathologic VAR is very rare. A 58 year-old male patient with a history of smoking and positive family history was admitted to our clinic complaining of ch...

“Arterial circle of Vieussens” — An important intercoronary collateral

An Unusual Form of Coronary Artery Fistula: A Small Aneurysm of Vieussens' Arterial Ring Communicating with the Pulmonary Artery

Vieussens' arterial ring (VAR) is the connection between the conus branch of the right coronary artery and the proximal right ventricular branch of the left anterior descending coronary artery. VARs are found in 48% of the population; however, pathologic VAR is rare. We experienced a case of pathologic VAR that involved a fistula connecting to the main pulmonary artery.

Case Image: A rare angiographic image of Vieussens' arterial ring associated with coronary to pulmonary artery fistula.

Vieussens’ arterial ring (VAR) is a collateral circulation between the conus branches of the right coronary artery (RCA) and the left anterior descending artery (LAD), and is thought to be an embryologic remnant. It was first described by Raymond de Vieussens in 1706. VAR is found in 48% of the population, but pathological conditions related to VAR (aneurysm, rupture, fistula) are very rare. A ...

Images in cardivascular medicine. Detection of large aneurysm of Vieussens' arterial ring after abnormal shadow on chest radiography.

A 73-year-old woman presented to our institution with an abnormal shadow on chest radiography. The patient was a nonsmoker and enjoyed good past health. There were no constitutional symptoms. She was completely asymptomatic during exercise and at rest. An ECG (Figure 1) showed normal sinus rhythm. A posteroanterior view of the chest radiograph (Figure 2) showed a well-circumscribed roundish mas...