Retrocardiac sinus node artery: a previously undescribed anatomical variation
نویسندگان
چکیده
A 79-year-old male patient with chronic atrial fibrillation and a history of mitral valve repair including ring annuloplasty several years ago underwent coronary angiography (fig. 1) for acute coronary syndrome, which showed the culprit lesion in the proximal left circumflex (LCx) artery. Angiography also showed a branch that arose just proximal to the culprit lesion, coursed on the left and then on the posterior atrioventricular groove at the crux cordis and followed thereafter an anterior and superior course toward the sinus node area; it was recognised as a retrocardiac sinus node artery (SNA). A second SNA arising from the
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