Single coronary artery originating from the right sinus of Valsalva.

Percutaneous revascularisation in anomalous coronary arteries poses certain technical difficulties, especially in the selective cannulation of the diseased vessel and the coaxial positioning of the guiding catheter for optimum stability. We report a case of successful stent implantation in a single coronary artery (SCA) arising from the right sinus of Valsalva (SoV). The ART 4 (Boston Scientific) guiding catheter provided excellent back-up support for stent delivery in the diseased circumflex artery. We also discuss the anatomical variations of an SCA originating from the right SoV, their angiographic recognition, the clinical implications, as well as technical considerations that should be taken into account when performing percutaneous interventions in these vessels.