Singh Rajani
Additional Professor, Department of Anatomy, AIIMS , Rishikesh, Uttarakhand, India .
J Clin Diagn Res. 2016 Oct;10(10):AD01-AD02. doi: 10.7860/JCDR/2016/20140.8605. Epub 2016 Oct 1.
Heart is supplied by right and left coronary arteries. Therefore, the knowledge of normal and variant anatomy of both these arteries and their configurations is indispensable for proper understanding of diagnosis and treatment of dreaded cardiac diseases. During routine cadaveric dissection, a heart of an adult female with anomalous course of Right Coronary Artery (RCA), new variant of trifurcated Left Coronary Artery (LCA) and partial atresia of circumflex (CX) artery was detected. Trifurcation of LCA into anterior interventricular, CX and a ramus intermedius without giving accessory branches has been reported. But in the present case, a variant trifurcation was found having rare configuration i.e., the interventricular branch gave two additional branches, a new variant along with ramus intermedius also giving an additional branch another new variant followed by partially hypoplastic circumflex artery. Besides this, RCA has an aberrant course modifying normal supply of heart. This rare configuration of coronary arteries will facilitate the cardiac surgeons to improve the understanding of defects of coronary arteries and planning of angiography, coronary by bypass grafting and other surgical interventions, radiologists for refining interpretation of imagery and anatomists for new variants.
心脏由右冠状动脉和左冠状动脉供血。因此，了解这两条动脉的正常和变异解剖结构及其形态对于正确理解可怕的心脏疾病的诊断和治疗是必不可少的。在常规尸体解剖过程中，发现一名成年女性心脏的右冠状动脉（RCA）走行异常，左冠状动脉（LCA）出现新的变异型三分叉，旋支（CX）动脉部分闭锁。已有报道称LCA三分叉为前室间支、CX和中间支，且不发出分支。但在本病例中，发现了一种罕见形态的变异型三分叉，即室间支发出另外两个分支，一种新的变异型，中间支也发出一个额外分支，这是另一种新的变异型，随后是部分发育不全的旋支动脉。除此之外，RCA走行异常，改变了心脏的正常供血。这种罕见的冠状动脉形态将有助于心脏外科医生更好地理解冠状动脉缺陷，规划血管造影、冠状动脉搭桥手术和其他外科干预措施；有助于放射科医生完善影像解读；也有助于解剖学家了解新的变异型。
