Niraj Nirmal Pandey
1 
, Aprateem Mukherjee
1, Nitish Naik
2, Priya Jagia
1* 1 Department of Cardiovascular Radiology and Endovascular Interventions, All India Institute of Medical Sciences, New Delhi, India
2 Department of Cardiology, All India Institute of Medical Sciences, New Delhi, India
Abstract
We report a case of a 53-year-old man with a “short RCA” seen coursing within the proximal part of the right atrioventricular (AV) groove and terminating in the mid-portion of the right AV groove and a “long RCA” seen to have a proximal course outside the right AV groove, over the free wall of the right ventricle, where it gave rise to the right ventricular and acute marginal branches before returning to the right AV groove in its distal course. The discussion highlights the need for revisiting the nomenclature of “dual RCA and drawing a distinction between “dual” and “duplicated” RCA.